is bleach: thousand-year blood war (bleach: sennen kessen-hen) episode 9 filler?

Knocking on the door of the office of her captain, Shunsui Kyōraku, 8th Division Lieutenant Nanao Ise announces she is coming in and apologetically opens the door when she does not receive a response, only to express surprise upon seeing Shunsui reading a letter on the other side of the room. Though Nanao chastises him for not saying anything even though he was in here, Shunsui informs her they might have to say farewell to each other and reveals he has been promoted to Captain-Commander, as well as captain of the First Division.