User blog comment:JustSomeDude.../Where'd They Go?/@comment-24769684-20140831122043/@comment-24769684-20140903192752

The time it took Kyros to cut off Doffy's head and for Luffy and Doffy to do battle could have given Burgess enough time to escape on his Yonko-issue jetski, or what ever he uses.

If he didn't escape, I'm expecting him to appear at the end of the arc and some kind of foreshadowing of Blackbeard's rise to power will occur.