User blog comment:Godisme/Kill The Shadow/@comment-44061-20120613193643/@comment-1268838-20120613200203

I suppose there must be some means of distinguishing what composes a Bankai. Since Szayel was able to target the ability in specific and nullify it, taking a step further and outright capturing does seem plausible enough.

I'm still not sure about this notion of no real fights happening though. As one-sided as things appear, I don't see how this can be settled with anything less than an FKT-style battle royale. Bankai or not, they're going to have to fight, even if they're unsure of whether they're capable of winning.