Board Thread:New on Bleach Wiki/@comment-957629-20151213135550/@comment-5398287-20151215235311

Technically, a character could still legitimately die of injuries - they'd just have to be far enough away from any 12th Division members/Orihime to do so. During the first invasion, Unohana and Isane weren't even on the battlefield, so they couldn't save anyone who was bleeding out or whatever.