is one piece episode 299 filler?

The episode begins just after Sanji's fight with Jabra ends, with Zoro's fight with Kaku just heating up with the two fighters clashing with such power that the tower starts to slide again causing Sanji to wonder if they are trying to collapse the tower. As he avoids the debris, he notices the sign Nami left before and decides to head after them.

Back with Robin and Spandam, they have unfortunately arrived at the Bridge of Hesitation, and they now see the gates which are now wide open.