Board Thread:Improvements and Issues/@comment-11953840-20130716152436/@comment-11051098-20130718191859

AldenHeathcliffe wrote: Nel - I hate baby Nel. I want to kick her like Nnoitra did. I dislike adult Nel too, come to think of it, for being an airhead and a bit of a prick towards people who clearly disliked her. So yeah, whatever she does, I won't care much for it. But it does mean we get to see other Arrancar survivors and more Urahara.

Stern Ritter M just explained the Unohana-Nnoitra connection. It's hardly important. If Unohana does return at all, it'll be as Zaraki's Zanpakutou spirit.

Although I too think Nel have been annoying at times, I think you're a bit harsh on her. Maybe Nelliel was too harsh on Nnoitra, but when someone openly hates and despises you, what can you do? It's not your fault if you're stronger than them, neither that they hate you for it, are you just gonna let them dominate you?

And that's just my theory on how Unohana knew Nnoitra's full name, it seems the most likely option to me.