Thank you.

This is one of the things I respect about the Eastern Orthodox. You don’t beat around the bush on this matter. We both hold to positions that are in utter opposition to one another. Someone is right and the other is wrong. For reunion to occur one must admit they’ve been wrong this entire time. A Catholic cannot in good conscience concede ground and still be Catholic. An Eastern Orthodox cannot concede ground and still be Orthodox. I’ve noticed too many on the Catholic side seem to forget this. It ultimately comes down to one of us admitting that we’re wrong. There can be absolutely no reunion without that.
Time will prove us right of course. Russia will convert in time and the rest of the schismatic eastern churches will crumble into obscurity.
No it is not.
What is your point?
There are not different branches of the Church. Branch theory is an Anglican heresy. The is only one Catholic Church, true and undivisable.
And of course we spend a lot of time telling others what they have to do to be re-united. They have broken away from the true Church and fallen into schism and heresy. The Catholic Church is the Church founded by Jesus Christ and carries His authority. All others do not. We are right and they are wrong, absolutely and completely.
And I expect they would say the same. There is a battle in this world between orthodoxy and heresy. But a heretic prides himself on being orthodox and condemns the orthodox as the true heretic.
We know we’re orthodox because of faith in Christ and His Church.
It is not a mere concept. It is divine truth taught by the Catholic Church. The Catholic Church is the one true Church and all others have broken from her.
There is not “larger church of Christ”. There is only one Church and that is the Catholic Church. No Church in schism of ecclesial community offers anything to the Body of Christ. Any good in those communities is that which they have retained from their Catholic heritage, it does not belong to them, it is not their fruit. And as we see throughout history it eventually withers away and dies as it’s as leaf fallen from the tree as it wallows in the mud of heresy and schism.
The Church is not divided, the Body of Christ is not divided. She is one. She is holy. She is catholic. She is apostolic.
She is Roman.