User blog comment:Cajadehu/How Blackbeard stole Whitebeard's Devil Fruit Power: Theory/@comment-24769684-20160502005355/@comment-28357751-20160502015831

Yeah, it's weird what Oda said. What happens if people swallow a piece of the same DF at exactly the same time? How would that work? Not to poke holes (it's not entirely relevent to BB gaining 2 DF powers) but it makes more sense to me that you'd have to eat the whole / majority of the fruit.