is one piece episode 517 filler?

Two years have passed and the episode opens with Luffy reclaiming his straw hat to renew his voyage. The beasts on the island have been tamed by Luffy.

Luffy informs Boa Hancock that he is thankful for the food, but he does not want to marry her. On Sabaody Archipelago, Rayleigh and Shakuyaku discuss how time has passed and the pending arrival of the Straw Hat Pirates.

Zoro interrupts them and learns that he is the first of the crew to arrive on the island. Meanwhile, Nami is sitting at a bar which happens to be hosting the Fake Straw Hat crew.