I know that last point is not shared by the RCC except where the Pope himself shares it! So we won't go into it.
Hope you caught my reference to Cardinal Carvajal ~ back in the early 1500s. He's the reason there was no Protestant movement in Spain ~ because if there had been he'd been the leader.
It's hardly a delusion
...most Protestants consider churches with bishops to be simply Catholic churches under another name.Who are "most"? The largest of the schismatics are the Orthodox, then probably the Lutherans and the various Anglican derivatives, iirc. All of them have what they call "Bishops". Who is left of consequence?
First Century Church is Catholic Church in hiding.
What the Protestants seek is not my concern. It is all foolishness, and mostly not done in good faith.