is one piece episode 689 filler?

Donquixote Doflamingo confronts Monkey D. Luffy, Trafalgar Law, and Ucy, as they have fallen into a slanted well on the first level of the royal plateau.

Angered by his presence, Luffy immediately attempts to punch Doflamingo but he blocks it effortlessly. After mocking them for getting caught into the trap, Doflamingo fires multiple string shots at the bull that incapacitates him and also knocks Luffy into the water.

He mocks them further about how easily they were defeated, but in spite of this he commends Luffy for his ability to gather allies, especially under these circumstances.