Bleach Episode 240

Even after acknowledging the fact that the Zanpakuto Arc in Bleach is, yet, another filler, it's the best one so far in Bleach. There hasn't been another filler that's gotten everyone's attention as much as this and should you do a search online, you will find tons of discussion threads in Anime forums regarding this arc in particular.

So after watching Bleach episode 240, the question is "What is Byakuya up to?" And why exactly is he protecting Muramasa and telling Ichigo to fall back? If you ask me, it's a bit too wierd, because it seems as if Byakuya is acting like a Zanpakuto?! Aside from all this nonsense, I'm hoping to see some more action between the Zanpakuto and their owners. Most importantly, I want to see Shunsui Kyoraku and his Zanpakuto go head to head, since we hardly know anything about their Bankai.