“When we all know that the Roman “church was started
by the Roman Pontiff Constantine at Nicea in 325 CE.”
I would say, even later than that. Even when they were talking about the “Primacy of Peter,” as late as 600AD they still regarded the Bishops of Antioch, Alexandria and Rome as all being his “successors” and sitting in his ‘seat.’ It wasn’t until the Pope after Gregory that they claimed the title of Universal Bishop.
Shabbat Shalom !shalom b'SHEM Yah'shua HaMashiach