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... Vatican II is not from the Holy Spirit..

Yet, again, this is based upon the fact that Cushing was already the valid Archbishop of Boston, allowing him to remain the "conduit" of supplied jurisdiction in that See, kind of like how Bishops and Cardinals can still be appointed during a sede vacante of the Papacy; whereas, JPII, for example, was never validly the Bishop of Rome given he was a heretic beforehand, and would not have any possession of universal jurisdiction regardless, preventing him from even serving as a "conduit" for the appointment of Bishops, Cardinals, and priests by this means.

22. Actually only those are to be included as members of the Church who have been baptized and profess the true faith, and who have not been so unfortunate as to separate themselves from the unity of the Body, or been excluded by legitimate authority for grave faults committed. “For in one spirit” says the Apostle, “were we all baptized into one Body, whether Jєωs or Gentiles, whether bond or free.” ¹⁷ As therefore in the true Christian community there is only one Body, one Spirit, one Lord, and one Baptism, so there can be only one faith. ¹⁸ And therefore if a man refuse to hear the Church let him be considered — so the Lord commands — as a heathen and a publican. ¹⁹ It follows that those are divided in faith or government cannot be living in the unity of such a Body, nor can they be living the life of its one Divine Spirit.

b. Public heretics (and a fortiori, apostates ) are not members of the Church. They are not members because they separate themselves from the unity of Catholic faith and from the external profession of that faith. Obviously, therefore, they lack one of the three factors—baptism, profession of the same faith, union with the hierarchy—pointed out by Pius XII as requisite for membership in the Church (see above, p. 238). The same pontiff has explicitly pointed out that, unlike other sins, heresy, schism, and apostasy automatically sever a man from the Church. For not every sin, however grave and enormous it be, is such as to sever a man automatically from the Body of the Church, as does schism or heresy or apostasy ”

By the term public heretics at this point we mean all who externally deny a truth (for example Marys Divine Maternity), or several truths of divine and Catholic faith, regardless of whether the one denying does so ignorantly and innocently (a merely material heretic), or wilfully and guiltily (a formal heretic). It is certain that public, formal heretics are severed from Church membership.

1) That formal and manifest heretics are not members of the body of the Church can well be said to be the unanimous opinion among Catholics.

the unity of the profession of faith, which is dependent on the visible authority of the living magisterium, is the essential property by which Christ wanted His Church to be adorned forever, it follows clearly that those cannot be part of the Church who profess differently from what its magisterium teaches. For then there would be a division in the profession of faith, and division is contradictory to unity. But notorious heretics are those who by their own admission do not follow the rule of the ecclesiastical magisterium. Therefore they have an obstacle that prevents them from being included in the Church, and even though they are signed with the baptismal character, they either have never been part of its visible body, or have ceased to be such from the time they publicly became heterodox after their baptism.

There are also souls who, though having been incorporated into the Church by baptism, break off from this Body and cease to be members of it. The bond of communion produced in them by baptism is broken by heresy, schism, or excommunication. Unlike the case of sinners who though dead remain attached to the Body, these souls cease completely from being members of the Church, and that is why they cannot licitly approach the sacrament of Holy Communion.