It wasn't declared dogma yet was it? Thought that and Papal infallibility were declared such after Marian apparitions in the 1800s
"It wasn't declared dogma yet was it? Thought that and Papal infallibility were declared such after Marian apparitions in the 1800s"
That was my point. When Luther was sermonizing, there was no Feast of the Immaculate Conception. It was called the "Feast of the Conception of the Most Holy Theotokos by St. Anna" The Latin position would be that the 1800s' dogmatic proclamations on the Immaculate Conception and Papal Infallibilty were merely papal affirmations of what The Church always and everywhere believed. When they were proclaimed, Rome knew Orthodoxy didn't accept those notions, but at that point in time, Rome was of the opinion that Orthodoxy was not part of The Church whose boundries were co-extensive with the bishops in communion with Rome only.
Correct, but understand that the Holy See typically and in that case pronounces on what it sees a universal belief already. There were churches named after Immaculate Conception, for example, way before the doctrine was formally accepted.