is bleach episode 279 filler?

As the Visored arrive, Gin Ichimaru states there are a lot of "familiar faces" among them. The Visored think back to 110 years ago, when they were Captains and Lieutenants of the Gotei 13, and to 101 years ago, when, as Shinji Hirako and his friends were going through Hollowfication, Kisuke Urahara and Tessai Tsukabishi appeared to stop Sousuke Aizen, Gin, and Kaname Tōsen.

As the three walked away, Tessai used Hadō 88. Hiryū Gekizoku Shinten Raihō, which Aizen blocked with Bakudō 81.

Dankū.