After Muse finished speaking, he nodded at Angel, then swiftly left with Rosen's head via the teleportation Magic Pattern to the Fantasy Mechanical City. He still had many things to take care of, like restoring Rosen's shell, tracing the Seed's whereabouts, preparing for further attacks from the Seed, and responding to the upper echelons of Sky Mechanical City... and more.
Therefore, Muse didn't have much time to entertain Angel. He instructed Melisa to take the others out of the secret room and left first.
Sanders patted Angel's shoulder: "It's time to prepare to leave."
Angel nodded. The affair of the Seed was extensive, and as a newly ascended wizard, he couldn't play any significant role in it. Moreover, Angel believed that in cities like Sky Mechanical City, which were integrated with Witcher Organizations and trade centers, there must be measures in place and hidden cards to deal with such threats.