From the Baltimore Catechism;
Q. 510. Is it ever possible for one to be saved who does not know the Catholic Church to be the true Church?
A. It is possible for one to be saved who does not know the Catholic Church to be the true Church, provided that person:
1.(1) Has been validly baptized;
2.(2) Firmly believes the religion he professes and practices to be the true religion, and
3.(3) Dies without the guilt of mortal sin on his soul.
Q. 511. Why do we say it is only possible for a person to be saved who does not know the CatholicChurch to be the true Church?
A. We say it is only possible for a person to be saved who does not know the Catholic Church to be the true Church, because the necessary conditions are not often found, especially that of dying in a state of grace without making use of the Sacrament of Penance.
Q. 512. How are such persons said to belong to the Church?
A. Such persons are said to belong to the "soul of the church"; that is, they are really members of the Church without knowing it. Those who share in its Sacraments and worship are said to belong to the body or visible part of the Church.
https://www.catholicnewsagency.com/resources/catechism/baltimore-catechism/lesson-11-on-the-church
Baltimore isn't absolutely infallible though, and the strictest EENS people would say that it is wrong in the light of Florence.
My issue at the end of the day is that I can't believe that the writers of baltimore, the catechism of St Pius X, Mueller Catechism (allows BOD by "desiring to do all that God has required for salvation") all the clergy, whether hermeneutic of continuity *or* trad, are all just idiots who can't read the plain words of Florence, yet that is the logical conclusion of the *way* guys like Stubborn and Last Tradhican (lol that name is fitting here :D ) argue for a strict view of EENS.
I actually, personally, have little interest in the "Feeneyism is heresy" line of reasoning, I suspect that Feeneyites who take their position in good faith will be shown mercy if they are wrong, just as I suspect non Feeneyites will be shown mercy if they are wrong under the same circuмstances.
I'm actually not even *that* perturbed by the idea that they might be *right* (though I'm nearly certain Trent is teaching BOD as a possibility *at least* for the catechumen) as to the final conclusion.
My bigger issue is the argument. Like, I'm admittedly a new convert. And apparently I'm supposed to *absolutely* believe my own interpretation of Florence over what all the clergy say. Like that, by itself, is a huge stretch.