is one piece episode 999 filler?

Nami is excited to see Franky and Brook. The samurai continue to battle the Beasts Pirates in the performance hall.

However, the Numbers play with the Brachio Tank like a toy, ripping the hatch open to see Usopp and Chopper before throwing the tank into the ground. Unharmed by the beatings, the tank fires back, but the Numbers are also unharmed by the fire.

One of the Numbers picks the tank up and shakes it around, making Usopp and Chopper dizzy. Yamato runs through the halls to rescue Momonosuke, but is still pursued by Ulti.