But a twist that completely contradicts what was already confirmed?
Heartless don't exist during BBS.
Xehanort doesn't show up until after BBS.
He doesn't even turn into Ansem SoD until months to a year after BBS.
There's no logical reason for Ansem SoD to be in BBS. It's just MX's reflection.
Araliya puts it best. Srry dude.