Then it is as I said. That there is redemption outside of the visible confines of the Roman communion is a logical implication of the belief you just described.
I think that a RCC theologian might say that non-Catholics can be saved as individuals who make use of the means of sanctification that they are able to find outside the visible confines of the RCC. According to the RC decree on ecumenism: "...many and excellent things can exist
outside the visible bounds of the Catholic Church: The written Word of God,
the life of grace, faith, hope and love, and other interior gifts of the
Holy Spirit and visible elements: all these things, which come from Christ
and lead to Him, belong to the one-only Church of Christ. Even not a few
sacred actions of the Christian religion are carried out among the brothers
separated from us. . . which beyond doubt can really generate the life of
grace, and are to be said to be apt to open the entry into the community of
EO Bishop Kallistos Ware said this about the doctrine:
"Extra Ecclesiam nulla salus. All the categorical strength and point of this aphorism lies in its tautology. Outside the Church there is no salvation, because salvation is the Church" (G. Florovsky, "Sobornost: the Catholicity of the Church", in The Church of God, p. 53). Does it therefore follow that anyone who is not visibly within the Church is necessarily damned? Of course not; still less does it follow that everyone who is visibly within the Church is necessarily saved. As Augustine wisely remarked: "How many sheep there are without, how many wolves within!" (Homilies on John, 45, 12) While there is no division between a "visible" and an "invisible Church", yet there may be members of the Church who are not visibly such, but whose membership is known to God alone. If anyone is saved, he must in some sense be a member of the Church; in what sense, we cannot always say."