Can two walk together, except they be agreed?
Amos 3:3
"With Vatican II (1962-1965), Roman Catholicism updated its ecumenical project and embraced a concentric circle type of unity in which the one and only Church “subsists in” the Roman Catholic church and other churches and communities gravitate around this center according to their degree of nearness or distance from it.
According to Vatican II and subsequent magisterial teachings, Christian unity is threefold:
1. professing the same faith,
2. celebrating the same Eucharist (i.e. the Roman Catholic way), and
3. being united under the same sacramental ministry in apostolic succession (i.e. under the Pope)." EvangelicalFocus