is one piece episode 343 filler?

Luffy questions the zombie groups intentions. They inform him they are hanging out in the graveyard.

He then interrogates on where Nami, Chopper and Usopp might be, but they refuse to talk. As the Straw Hat captain is about to hit them, the zombie admit they didn't harm them.

The Straw Hat group begins to beat them up and begin to check Dr. Hogback's home.

A person carrying a torch approaches the beaten zombies. While walking through the forest, Zoro and Sanji get into another argument when another zombie comes in awe of their power.