is one piece episode 823 filler?

In the Whole Cake Chateau, a group of Big Mom Pirates encounter Bobbin recovering from being kicked into the wall by Sanji. They express concern over the situation, but Bobbin, not wishing for anyone else to get involved, bobs his head from side to side to make them fall asleep.

After taking out his crewmates, Bobbin races after Sanji to deal with the Straw Hat himself, and Sanji continues running through the Chateau. In the Mirro-World, Chopper, Carrot, Nami, Jinbe, and Pedro ask the mirrors for information about Luffy, Sanji, and Brook's whereabouts, but they are initially unsuccessful.