User blog comment:Godisme/Kill The Shadow/@comment-1489595-20120615143842/@comment-1332195-20120615181553

Possibly; we'll see.

It's appears to me that the captains don't have a way of keeping in touch in the field atm (I don't see any butterflies around), so the strealing of Bankais could be simply down to lack of communication.

Something I've just thought of for a curve-ball; has Mayuri requested this for him to get some data on the devices and make a counter more quickly? Sasakibe's last words, while not completely clear, gave them a heads-up, and it's in his nature for Mayuri to take on the challenge, if only for his own ego.