User blog comment:Gon10/Kuchiki Byakuya´s Bankai/@comment-8669536-20130621094711/@comment-6245676-20130622080111

I don't know about that, Komamura is damaged when his bankai is because of how closely his own soul is linked to the soul of his Zanpakuto. That's why he gets damaged when it does and that's why his Bankai is the only one to be able to repair perfectly (unlike everyone else's). So I think if anyone inflicted damage on the bankai even if he wansn't using it, that it would harm Komamura.