I counted four seconds from the time Bellatro went "out" to when he starts randomly thrashing his legs then butt-scoots against the cage. I do not think it's possible for someone to be unconscious for only four seconds then wake up fully capable of making immediate free will choices. He couldn't even manage to fake being KOd for even five seconds! If you're going to try and sell yourself to a DQ win at least be counting off the seconds in your head and wait until you get to at least ten before you "miraculously" revive

I'd personally wait 15 seconds just to be on the safe side. And that butt scoot sure was lightning fast for a recently KOd person. I don't think he could've possibly done it any quicker. And then he even GETS UP TO ONE KNEE 15 seconds into the video before realizing that might give away his faking, then suddenly pretends to be "dazed and confused" again