is bleach episode 203 filler?

Captain Kenpachi Zaraki continues his fight with Nnoitra Gilga. He asks him if he knew that a sword's power increased if it was swung with two hands instead of one.

Nnoitra screams, saying that everyone knows that, and charges at the captain. Kenpachi remarks that he doesn't believe he does and once Nnoitra is close enough to him, he slashes his sword down on the Espada, creating a huge shockwave and grievously injuring Nnoitra.

Nnoitra then begins to think back on his past. He remembers how ruthless he was in battle, and how he could never defeat Nelliel Tu Odelschwanck.