is bleach episode 45 filler?

Having confronted a wounded Uryū Ishida in the pavilion of the Senzaikyū compound, 9th Division Captain Kaname Tōsen assures Uryū that he bears him no ill will, but asserts that he must eliminate Uryū for the sake of their peace and releases his Shikai, Suzumushi, releasing a piercing chime that knocks out Uryū on contact, causing him to collapse as Tōsen resheathes his Zanpakutō and declares that Uryū's senseless struggle is over.