Nado, you've been shown countless texts, from theologians and the Magisterium, explaining that the Catholic Faith is necessary for salvation, Nostis et Nobiscuм, "ensure that the faithful are deeply and thoroughly convinced of the truth of the doctrine that the Catholic faith is necessary for attaining salvation." Summo Iugiter Studio, "some of these misguided people attempt to persuade themselves and others that men are not saved only in the Catholic religion, but that even heretics may attain eternal life." Your opinion is liberal at best, and you are misguided on this point as the Pope teaches. Msgr. Fenton informs you that most theologians taught the Catholic Faith was necessary for salvation even up until the 1950's. If you don't want to believe what the Church teaches, nobody can help you.
Dear Ladislaus, I consider Trent, its Catechism and St. Pius V's condemnation of Michael Baius' to be the strongest evidence of the doctrine of BOD. But this letter isn't unimportant, it establishes what salvation by true implicit desire would look like. Also, I disagree that St. Ambrose' oration is "ambiguous", not a single one of the Doctors ever thought so, St. Bernard, St. Thomas, St. Robert and others expressly did not. That is Fr. Feeney's mistake. St. Ambrose clearly explains that as martyrs are washed in their own blood, his piety and desire have washed him also. This is not ambiguous, that St. Ambrose says prayers are necessary rules out both water baptism and BOB. This is the same meaning Innocent II applies to the priest, who persevered both in "faith" and "in confession" which includes the votum. Also, that St. Augustine changed his opinion is by no means universally admitted by traditional scholars. Even if he did, what matters is the teaching of his that the Magisterium approves, and that is that "Baptism is ministered invisibly to one whom not contempt of religion but death excludes." St. Alphonsus, you say, was mistaken, but the many Popes who approved his work as free from error and infallibly safe to hold and teach did not think so. Their approval shows the letter is truly authoritative. Finally, if you still dispute this letter's authenticity, Trent saying contrition perfect by charity or love of God together with the desire of the sacraments remits sins, St. Pius V applying this both to catechumens and penitents closes the question.