If the document is indeed wrong, what does it say about the Catholic and Orthodox bishops and theologians working on the commission?
In essence, that their time in seminary and service of God leaves them significantly less qualified to consider th subject than the swarms of mini-popes on CAF

(It’s not really different than the folks here, unconstrained by seminary training, who “correct” priests with “doctrines” they found on google, of which the “ignorant” priest had been unaware . . .)
A Catholic who states there is no salvation outside of the Catholic Church is a nut?
A Catholic who means by that membership in the churches in full Communion with Rome (or the RCC alone!

) is
directly contradicting papal teaching (among things), to the point that “nut” is a fair (but moderate) description of the position that all Orthodox will be damned. There are far less charitable words that could be accurately used . . .
ut would you be surprised if the Council’s decrees were originally issued in Latin to lend it the authority and character or majesty of Roman law and official imperial documents?
I would be
quite surprised to see that in latin that late.
Greek began its ascent over Latin in the empire pretty much the day Greece was annexed, with the empire becoming increasingly grecian in most respects. While Latin had some formal roles, Greek was more prestigious, and Latin waned. Greek, not latin, was the universal church language (although the diocese of Rome replaced that language with the vernacular over the course of the third and fourth centuries).
By the end of the eight century, it would be odd to see something of importance being in greek.
For that matter, I
would be surprised if a significant portion of the bishops present from anywhere but Italia, hispania, and gaul spoke latin fluently in the first place.
But I’m not going to re-read a few hundred pages of Gibbon over this . . . once is plenty for one lifetime . . .
So hypothetically if Peter died in a shipwreck heading for Rome or anywhere for that matter, the Church would have to have its seat on a boat in the water since that’s where he died?
To make that make any sense you would also have to add the seagoing church that he administered from the sea . . .