They do know the Gospel, but they don't know the visible Church. Your, "thus" implies that your conclusion logically follows, when it does not.
Let's look again at the language of 847:
""
847 This affirmation is not aimed at those who, through no fault of their own, do not know Christ and his Church: Those who, through no fault of their own, do not know the Gospel of Christ or his Church . . ."
The exclusion is stated to apply to those, first of all, who "do not know Christ and his Church." Again, "do not know the Gospel of Christ or his Church." Yes, Protestants DO know Christ, they DO know the Gospel of Christ. And they DO know of, know about, are familiar with the teachings of the Roman Catholic church. Christians generally DO KNOW the RCC. Many Protestants DO NOT recognize the RCC as 'Christ's church,' based on Scripture. Are you proposing some other meaning for the word 'know'? The catechism was translated into English by the RCC. The words used have common recognized meanings. Are you suggesting some OTHER meaning for 'know'?
Secondly, we have the qualifier, "through no fault of their own.' Meanning what? Please provide the RCC-endorsed explanation of this phrase, with a cite. For example, does study ABOUT the RCC and rejection of the RCC based upon that study, constitute 'fault'?
And the language used elsewhere is clear and unequivocal in stating that the Church mentioned is not limited to the "visible church".
We are talking here about the RCC at the time of Unam Sanctam. That certainly was NOT the case at that time. The official teaching of the RCC at that time was that the RCC is INDEED the one, the only true Church, and that those with other beliefs, who did not submit to the pope, were excluded from salvation. Are you disputing that?
But aside from that, in regard to the 1997 catechism, the RCC STILL claims to be the only true Church. The Church now concedes that God may work today through faith communions outside the RCC, BUT that any knowledge, spiritual beneifts, etc., blessings which may be found in communions outside the RCC in fact "derives from the fullness of grace and truth that Christ has entrusted to the Catholic Church.from God." And, that all such is a call to Catholic unity, that is, to bring them into the Catholic fold. (paragraph 814)
By definition, within the Church's self-understanding, all believers are joined in the Body of Christ. Whether or not some may choose an incomplete union while living on this earth is a seperate matter, and has no bearing on whether they may attain salvation through Christ.
That is NOT what the catechism states. Those who KNOW the gospel, those who KNOW the RCC but refuse to join or continue in it, do not have salvation.
"Basing itself on Scripture and Tradition, the Council teaches that the Church, a pilgrim now on earth, is necessary for salvation: the one Christ is the mediator and the way of salvation; he is present to us in his body which is the Church. He himself explicitly asserted the necessity of faith and Baptism, and thereby affirmed at the same time the necessity of the Church which men enter through Baptism as through a door. Hence they could not be saved who, knowing that the Catholic Church was founded as necessary by God through Christ, would refuse either to enter it or to remain in it."
The reference to 'Church' means here the Roman Catholic church. Do you dispute that? If so, please cite to authorized RCC publications, rather than private interpretation.
To be subject to something doesn't require your consent, it is a matter of authority. You can disagree with the Pope all you want, but the simple fact that you disagree, on its own, doesn't make the Pope wrong.
Taken on a wider scale, Protestant Christians may not acknowledge papal authority. But that doesn't invalidate that authority. If that authority only applied to those who accept it, it would be the equivalent of moral relativism, because any given Christian could choose to disagree with that authority and still be right (in an absolute sense), simply by virtue of disagreeing.
Nor does the RCC's insistence on the pope's authority in fact mean that he has such authority. It is simply a teaching of that particular church, one which is not held commonly by other churches. Scripturally, the pope does not have such authority. The claim to authority is a tradition of that particular church.
I think the bigger issue here, is whether the Pope has that authority...
Is this the place for a Scripture study on that point? Not church tradition, but Scripture?
Dave