is one piece episode 661 filler?

As Luffy is talking with Zoro and Kin'emon about everything going on, Bellamy is approaching him from the side, saying he finally found him. Bellamy is about to attack Luffy, claiming it is nothing personal, but he is doing it to become one of the leaders of the Donquixote Family.

However, he begins having second thoughts and begins to back out. Dellinger appears behind him revealing that Bellamy is considered an eyesore for the family, and that he intends to kill him.

He also admitted, by a slip of the tongue, that the order for Bellamy's disposal came from Doflamingo himself.