is bleach episode 38 filler?

In the Eighth Division compound, Lieutenant Nanao Ise stands atop a damaged wall and inquires what the Riteitai wants with her because an order could have been delivered via Jigokuchō. Kneeling on the ground behind her, a Riteitai affirms this before revealing that his message is signed by both Captain-Commander Genryūsai Shigekuni Yamamoto and 10th Division Captain Tōshirō Hitsugaya, prompting a surprised Nanao to wonder if it is a top-secret order being delivered to her.