The point is already put to rest, infallibly. It’s infallible dogma that “outside the Church, there is no salvation”. But since the earliest times, no one (save for some fringe people who didn’t speak for the Magisterium) took that to mean that “one needs to be a visible, explicit, participating member of a Catholic parish, or else one will go to hell”!
Look up the Catholic teachings about “baptism of desire” and “baptism of blood”, to start; these are age-old teachings (not necessarily with those official titles, depending on the source) which show that the Church has never declared that “all non-Catholics are going to hell”.
Put in its clearest sense, the teaching says, “Anyone who is saved, is saved in and through Christ’s Catholic Church... whether they’re aware of that fact, or not... and whether they agree with that fact, or not.”