I am asking for a yes or no to both questions.

Salvation terminates in baptism because the Character makes you a member of the mystical body of Christ, so yes;
And as for the Catechumen, I have answered this scenario. The elect will be baptized and persevere, the reprobate will not persevere, though some may be baptized. Can God accomplish it in theory? YES.
But does he will to for THIS catechumen? That's a hidden judgment. Perhaps an elect catechumen would respond to interior graces to look both ways. Perhaps the reprobate catechumen resists said graces.

What source support do you have that an angel can perform any of the Sacraments?

I don't say an angel myself, you did. Although angels have been known to minister holy communion.

Rather I say that it is presumptuous and rash to assume a catechumen who meets an untimely death is saved and not damned. Says who? Given all the circuмstances for his easy reception existed and yet God did not see fit to suspend any unfortunate events, it seems more likely he is judged for hidden sins.

I'm a lifelong Catholic and I have never had to delve into such subjects so deeply - don't make saving your soul harder than it already is. Better to focus on the basics; confessing your sins regularly, attending Mass, saying your daily Rosary, and other basics. In these things, the Church is our authority, and our personal opinions and feelings do not matter.
 

Really, so now you want to say this is all an unnecessary conversation? I could have told you that, just read Ludwig Van Ott.

I don't say an angel myself, you did. Although angels have been known to minister holy communion.

Rather I say that it is presumptuous and rash to assume a catechumen who meets an untimely death is saved and not damned. Says who? Given all the circuмstances for his easy reception existed and yet God did not see fit to suspend any unfortunate events, it seems more likely he is judged for hidden sins.

I think it's time to post these quotes again since you seem to have a selective memory:

St. Bernard of Clairvaux, Doctor of the Church (12th century): Letter No.77, Letter to Hugh of St. Victor, On Baptism: “If an adult...wish and seek to be baptized, but is unable to obtain it because death intervenes, then where there is no lack of right faith, devout hope, sincere charity, may God be gracious to me, because I cannot completely despair of salvation for such a one solely on account of water, if it be lacking, and cannot believe that faith will be rendered empty, hope confounded and charity lost, provided only that he is not contemptuous of the water, but as I said merely kept from it by lack of opportunity..."

Pope Innocent II (12th Century): From his letter "Apostolicam Sedem" to the Bishop of Cremona, "We assert without hesitation (on the authority of the holy Fathers Augustine and Ambrose) that the 'priest' whom you indicated (in your letter) had died without the water of baptism, because he persevered in the Faith of Holy Mother Church and in the confession of the name of Christ, was freed from original sin and attained the joys of the heavenly fatherland.

St. Bonaventure, Doctor of the Church (13th century): In Sent. IV, d.4,P.2,a.I,q.I: “God obliges no one to do the impossible and therefore it must be admitted that the baptism of desire without the baptism of water is sufficient, provided the person in question has the will to receive the baptism of water, but is prevented from doing so before he dies."

St. Robert Bellarmine, Doctor of the Church (16th century): De Sacramento Baptismi, cap. 6: “...among the ancients this proposition was not so certain at first as later on: that perfect conversion and repentance is rightly called the Baptism of Desire and supplies for Baptism of water, at least in case of necessity”

....."it is certainly to be believed that true conversion supplies for Baptism of water when it is not from contempt but through necessity that persons die without Baptism of water.”

Baltimore Catechism (1885): Q. 653. Is Baptism of desire or of blood sufficient to produce the effects of Baptism of water? A. Baptism of desire or of blood is sufficient to produce the effects of the Baptism of water, if it is impossible to receive the Baptism of water.

Catholic Encyclopedia (~1913): Baptism: "It is the teaching of the Catholic Church that when the baptism of water becomes a physical or moral impossibility, eternal life may be obtained by the baptism of desire or the baptism of blood.”

This totally ends your rant on the subject.

I don't say an angel myself, you did. Although angels have been known to minister holy communion.

Rather I say that it is presumptuous and rash to assume a catechumen who meets an untimely death is saved and not damned. Says who? Given all the circuмstances for his easy reception existed and yet God did not see fit to suspend any unfortunate events, it seems more likely he is judged for hidden sins.

Distributing Holy Communion is not performing a Sacrament.

So, now you are trying to say if a Catechumen died, we presume he didn't deserve the Sacrament! What you are saying now is that the Church was rash and presumptuous to legislate and order Requiem Masses to be said for all Catechumens that die!

You are hanging your hat on Fr. Muller's quote over everything else. Muller was wrong, face it. You cannot reconcile an opposite. That's what modernists try to do. Muller was wrong, and the Saints, Doctors and Canon law are right. Bosco just quoted them. That is what you are supposed to do, go with reason in handling these quotes, not trying to accept both "yes" and "no" as both correct. Muller was mistaken, and you need to face that.

I think it's time to post these quotes again since you seem to have a selective memory:

St. Bernard of Clairvaux, Doctor of the Church (12th century): Letter No.77, Letter to Hugh of St. Victor, On Baptism: “If an adult...wish and seek to be baptized, but is unable to obtain it because death intervenes, then where there is no lack of right faith, devout hope, sincere charity, may God be gracious to me, because I cannot completely despair of salvation for such a one solely on account of water, if it be lacking, and cannot believe that faith will be rendered empty, hope confounded and charity lost, provided only that he is not contemptuous of the water, but as I said merely kept from it by lack of opportunity..."

Pope Innocent II (12th Century): From his letter "Apostolicam Sedem" to the Bishop of Cremona, "We assert without hesitation (on the authority of the holy Fathers Augustine and Ambrose) that the 'priest' whom you indicated (in your letter) had died without the water of baptism, because he persevered in the Faith of Holy Mother Church and in the confession of the name of Christ, was freed from original sin and attained the joys of the heavenly fatherland.

St. Bonaventure, Doctor of the Church (13th century): In Sent. IV, d.4,P.2,a.I,q.I: “God obliges no one to do the impossible and therefore it must be admitted that the baptism of desire without the baptism of water is sufficient, provided the person in question has the will to receive the baptism of water, but is prevented from doing so before he dies."

St. Robert Bellarmine, Doctor of the Church (16th century): De Sacramento Baptismi, cap. 6: “...among the ancients this proposition was not so certain at first as later on: that perfect conversion and repentance is rightly called the Baptism of Desire and supplies for Baptism of water, at least in case of necessity”

....."it is certainly to be believed that true conversion supplies for Baptism of water when it is not from contempt but through necessity that persons die without Baptism of water.”

Baltimore Catechism (1885): Q. 653. Is Baptism of desire or of blood sufficient to produce the effects of Baptism of water? A. Baptism of desire or of blood is sufficient to produce the effects of the Baptism of water, if it is impossible to receive the Baptism of water.

Catholic Encyclopedia (~1913): Baptism: "It is the teaching of the Catholic Church that when the baptism of water becomes a physical or moral impossibility, eternal life may be obtained by the baptism of desire or the baptism of blood.”

This totally ends your rant on the subject.

What is bizarre is that you twist the meaning of these quotes to apply them to someone who is not even a catechumen. You cannot care less about a justified catechumen who dies in his way to receive the water Baptism.  

You can now judge the fate of each catechumen? We don't know what it is in this regard. Surely some can be saved, but surely some are damned, it is presumptuous to say we know certainly either way.

No, not of each. It is unseen, and the Church says an individual CAN be saved, not IS saved in each instance.

You still have to know that Muller is wrong, and the quotes by Saints/Doctors are correct. Stop trying to reconcile opposites. Church teaching is unlike Holy Scriptures. Nobody said the meaning of Scripture comes to us with "ease and security", but it is said of Church teaching, because that's the way it is. Stop treating Church teaching like there are seemingly opposite things that need to be reconciled by you personally. By doing so you condemen what Mortalium Animos said.

Why a catechumen begs of the Church the Faith necessary for salvation before the water Baptism? because they do not have it a that point yet! That is why. Because Faith, hope and charity are infused at the same time at the point of Baptism.

No, that is not why. Your reasoning failed. The Church has Her rites. How can there be another for a catechumen in sanctifying grace when nobody could know that but God??

The Church even teaches a Catholic could gain sanctifying grace before Confession by perfect contrition, but since that cannot be seen in any individual case, the Church has ONE rite of absolution for the penitent regardless of what is unseen by man.