User blog comment:Xilinoc/Ch. 586 - The Headless Star 5/@comment-24913480-20140625154453/@comment-24577094-20140626164702

Michael, I believe in a previous chapter (the one where Urahara sends out the black pills so the Captains can retake their Bankai), it was stated that a Quincy can't use Vollstandig while he possesses someone's Bankai. Unless His Majesty has a way around that (I'm 50/50 whether I think he does or not), no such combination would be possible. But if it were, it'd be severely BA.