Romans 14 should apply to both sides. In my experience, it does not, and that may be where some problems may fester and resist efforts to heal.
Many generations back, one particularly wild female ancester of mine managed to get herself excommunicated, so she went to the Protestant church, and we have been Protestant ever since. My Catholic friends immediately started calculating how many generations, and happily told me that I was eligible to come back. That was nice, and I’ve been to Catholic as well as Protestant churches, believing that one might be saved by Jesus, rather than by whether you come from Paul... or Peter.
I do think suspect that there may be a problem with machinations on the Catholic side to turn this country into a majority Catholic country (as they may believe that Protestants don’t count as Christians) and bring it under the authority of Rome. The abortion issue makes a great poison pill to get Democrats elected who favor not building a wall. I do think that God is greater than any of His servants, or power-hungry people masquerading as servants, and God’s will, will be done.
I am never interested in “healing” if the R.C.C. thinks **I** am the one who left the Word of God. They want us to “return to the Mother Church”, not them to return to the Word of God they tried to destroy and failed.
How about you tell THEM to abandon their cult? Paganism? World dominance?
Instead of me? Want peace? Talk to them, not me. I merely educate people who want to hear. It sparks nerves because they are emotional, weak, apostate. UNTEACHABLE.