is bleach episode 214 filler?

In the Urahara Shop training ground, the Karakura-Raizer Team discovers a giant skull-shaped fortress in the sky and wonder what it might be. An injured Zennosuke Kurumadani informs the team that it's actually a Hollow structure.

He then tells them that he's been hearing rumors of something terrible happening to the town, which will require high-ranking Shinigami from the Gotei 13 to arrive, and that while he doesn't know everything he believes it has to be because of the recent number of Hollows appearing. However, none of the Human teenagers are able to understand what he's referring to.