is one piece episode 595 filler?

Sanji's group is recovering from the fall and the effects of the KYP gas. Sanji wonders if the samurai is alright.

Zoro argues that Sanji wanted to take the shortcut, but the cook fires back that they all agreed to go. Brook remembers the shadows he saw before they fell unconscious.

Zoro argues that no one was there while Sanji disagrees. There is a flashback to an hour ago, when the group finds the footprints.

Brook calls Zoro and Sanji over to look at the giant footprints. He thinks they might belong to the legendary yeti.

Zoro and Sanji tell him to not be ridiculous.