as i wrote in a different post, to me sounds the news of the alliance is not known yet inside Kaido crew, considering how they were surprised when Queen announced BM's crew is a special guest? Werent there some dudes saying "wtf are they coming here!?"... and Kaido is about to announce it soon at the party, no?! I thought Drake knew, and reported to Sword, only coz he is in the top of hierarchy so he heard it beforehand? I actually wonder if BM crew knows about the situation (if they already do, please remind me in which chapter it was shown ^^)