Board Thread:Questions and Answers/@comment-9826910-20130618064245/@comment-11051098-20130719090643

Your last sentence is probably the reason why e.g. Driscoll Berci failed to use the full power of Kôkô Gonryô Rikyû. Maybe he had the strength to use it, but he couldn't, because the Bankai was separated from its deceased owner.

But while on the topic - obviously, the one who wields a stolen Bankai cannot access its full power. Could it be that when the owner is still alive, the wielder can use up to, let's say 80 % of the full power, and if the owner is dead, the wielder can only access less than 50 % of its full power?

Äs Nödt seemed to use pretty much of the Bankai's full power, he literally tore Byakuya to pieces. But to me it appeared unclear if he used its full power, or only a part of it.