Just checking that I understand rule 500.8 correctly:
500.8. Some effects can add phases to a turn. They do this by adding the phases directly after the specified phase. If multiple extra phases are created after the same phase, the most recently created phase will occur first.
If multiple effects add extra phases before the current ones is over, these phases will run one after the other, right? If Medomai the Ageless attacks alone while Finest Hour is on the battlefield and then deals damage, I'll get two extra combat phases?
Obviously I had a big brainfart, but I guess the question was answered anyway. For a more practical example with extra turns, it's safe to assume that if I connect with both Medomai and Wanderwine Prophets (and sacrifice a merfolk), I'll get two extra turns?