Shunsui wore a different kimono and no hairpins when she met nanao, he didn't want to give anything away about her mother, he then gradually shifted into his normal style again.
Yamajii's captain commander position is also another of the thing he's been entrusted with or he takes it upon himself without them needing to say it, that's why he took care of nanao too even thou he wasn't obligated to do so.
Shunsui :'(
Lille has already been weakened a bit, the sword dissipated some of his energy when it cut his arm.
Another mentioned of eyes too.
Another Aizen mention, can't be a flashback without Aizen XD XDArashi89 said:
"Hey Nanao, this is your real sword now and only this sword can defeat that Quincy"
"Ok."
"Actually I've changed my mind here let me help you deal the final blow."
He never said that, but keep that bias up , good job.