is one piece episode 418 filler?

While traveling on Momonga's ship to Impel Down, Luffy has a nightmare about being separated the rest of his crew by Bartholomew Kuma. Hancock attempts to reassure Luffy but fantasizes about how he would respond and becomes too flustered to talk to him.

A few days earlier, Nami lands after being sent flying by Kuma. Haredas finds her outside his house and takes her in to help her recover.

Nami wakes up in a panic and throws objects at Haredas, but soon calms down; Haredas cooks a meal for Nami and explains that she has slept for two days since landing on the island.