is bleach episode 164 filler?

Facing down Szayelaporro Granz alongside Uryū Ishida, 6th Division Lieutenant Renji Abarai is asked about how long he can hold off Szayelaporro and estimates that he can do so for twenty seconds at most. In response, Uryū affirms that this should be enough as an intrigued Szayelaporro tells his Fracción so he can find out what Uryū and Renji can do in their condition.

Nearby, Pesche Guatiche slides down between two of the pillars lining the walls while quietly screaming in pain.