interesting point that the rift may have lingered longer (from orthodox perspective) than 1054

I could go back and read article, some things jumped out but they may be minor points

the author for example said they believed Western masses from that point forward to not create the Body and Blood of Christ… I think the Catholic view of orthodox in contrast is that they do actually create the Body and Blood of Christ “validly”, but “illicitly” - so orthodox generally have “real priests and sacraments”, but they are thought to be unlawful (it sounds like this author if he is correctly presenting orthodoxy’s view would believe Western sacraments to be “invalid”).

other thing was he said something about heretics being able to be “in the Church”. Catholics have some developed theology that heretics may separate themselves from the Church upon becoming heretics. From the Catholic Encyclopedia article on heresy, it was noted that in the early Church there wasn’t a set process for determining who was a heretic: https://www.newadvent.org/cathen/07256b.htm

Then it became customary for authorities to declare such and such as a heretic. I think in the 1917 Catholic Code of Canon Law, heretics were “ipso facto excommunicated” - they became excommunicated “automatically” by becoming heretics. But, apparently there are some distinctions between Membership in the Body of Christ perhaps versus Canon Law designations?

“Mystici Corporis”: The Mystical Body of Christ, the Church, by Pope Pius XII - 1943

https://www.papalencyclicals.net/pius12/p12mysti.htm

Actually only those are to be included as members of the Church who have been baptized and profess the true faith, and who have not been so unfortunate as to separate themselves from the unity of the Body, or been excluded by legitimate authority for grave faults committed.

For not every sin, however grave it may be, is such as of its own nature to sever a man from the Body of the Church, as does schism or heresy or apostasy.

This has come up in contemporary discussions of where apparent heretics might get in to positions of authority, and then declare themselves as “Christian and not heretics because this is what the competent authority that they are judges to be so”.