is bleach episode 236 filler?

Slashed by Kazeshini, Hisagi moves away with Shunpo as Kazeshini attacks him once more. Kazeshini licks his lips as Hisagi appears behind him before collapsing.

Kazeshini notes Hisagi used Shunpo to avoid a direct hit. Proclaiming Hisagi is an idiot for doing so, Kazeshini walks over to him and points out how Hisagi would not be in pain if he died before saying it is all the same to him because it is over.

As Hisagi raises his head, Kazeshini laughs maniacally and raises his kusarigama over his head before attacking, only to be blocked by Izuru.