Michael is already in his normal spot, leaning against the window, looking into the distance. He is thinking and he doesn't even realise that Erich has come in and sat down.
Michael is thinking about a few different things, his mind is wandering. He is looking at Holstein and sees a Rheinland Train going bye. He tries to think about what it would have been like if he had worked for Republican instead of the Militay.
Then for some reason he has to think of that short 1 second smile that Kommandant Eistochter gave him a few days back. He then forces his mind to think about something else; he ends up sinking back into deep thought about some infected pilots, that the Wilde had taken, that he had to eliminate a few days back.