is one piece episode 367 filler?

With Absalom down, Nami goes in search of Thriller Bark's treasure. She finds out that the vault is empty but forces two chipmunk zombies to tell her where the treasure is.

Meanwhile, the Straw Hat Pirates fighting Oars decide to use Tactics 15: Big Emperor. Franky docks onto Sanji and Zoro, with Usopp docking as right arm and Chopper as the head.

Nico Robin refuses to complete the docking as the left hand, stating that it is too embarrassing, much to the dismay of Oars who was getting pumped to fight the Big Emperor. Usopp fires Oil Stars to make one of Oars' feet slip.