For someone following the code "Only the strongest will survive." and even going as far as killing his own failed henchmen without thinking twice...Flamingo shouldnt give any least damn about B5&Buffalo now. His only concern is clearly Caesar and keeping gas/fruit production.
I must admit however that Flamingo was acting weird back there. He had that "plotting villain" theme surrounded so far and now its almost like he is cluelessly flowing with the storyline. Im sure he will think of something.
Also Kaidou's mystery thickens..."The Strongest CREATURE In The World"? Excuse me, that sounds way much more badass and scarier than "The Strongest MAN In The World"
Seems like another awesome Zoan boss fight may appear in future.