is bleach episode 172 filler?

After spending a lot of time chasing a missing cat in Soul Society, Izuru and the other members of the 3rd Division discuss how they’ve been doing a lot of menial tasks lately. When Kira goes to talk to Captain Shūsuke Amagai about it, he’s initially caught off guard by how Amagai calls him by his given name because it reminds him of how Gin Ichimaru used to do the same.

In any case, Amagai’s reasoning for the menial tasks is that he’s trying to restore the trust lost by the men due to Ichimaru’s betrayal, and he explains his desire to create a new division with himself, Kira, and Kibune as the three pillars of support.