Just was thinking, saw different strats and stuff on these fights and was wondering. I do see that the bosses will be released one by one each week but I'm curious does the end of the 4th boss and the shattering of the coliseum floor lead directly to Anub'arak or perhaps the shattering happens when talking to the NPC.
Obviously this is a dumb question, but i'm just not sure lol. Anyone know for sure?