User blog comment:Xilinoc/Ch. 551 - The Burnt Offerings/@comment-2048489-20131005003159

Hey hey quit the hate on Nanao. For all the problems that go hand in hand with her not teaching them, I don't think it's realistic to expect that of her. Face the facts:
 * They only had a few days' respite when the world was erased. A new kido capable of shutting out quincy power entirely made in a few days is miraculous enough. Learning it would take some time too.
 * She's also really good at Kido, which could factor into her doing that. If the captains aren't skilled enough in kido, there's no way they could master it in time for the attack. There's no guarantee they could even do it.
 * The other captains were all doing their own thing to get ready. Sui Feng was mastering Shunko for pete's sake. Yeah, she could just recall them all saying "I can shut out quincies," but still. They were all off doing their own thing.