The Doctor resurfaces to breath. "It's just a shape. A form." The Doctor grows quiet again because he would like to have Yaz still at their side but knew it was a choice to push Yaz away in the end. He knows from experience how Rose and Clara have reacted and thought it was best.

"She was clever. And we had a lot of adventures together. Shame we couldn't have more... Think you would have liked her. And Rose. They were funny. Not sure thar isn't someone you wouldn't have liked meeting. But that's the hard part. Sometimes they want to leave."