is bleach episode 251 filler?

In the past, the three men sit in a room. Laughing, the glasses-wearing man states Kōga probably feels very frustrated at being locked away in a dark prison cell.

Saying it is a shame, the fat man states it serves Kōga right. Laughing, the glasses-wearing man says this is true.

Asking the fat man if he remembers how Kōga used to boast to everyone about his power, the glasses-wearing man states Kōga likely is not boasting anymore and says he wishes he could see Kōga's defeat with his own eyes. Laughing, the fat man states this is a mean thing for the glasses-wearing man to say as all three men laugh.