 FACT: When Jason enters the train to Moscow at Berlin Ostbahnhof,  there is an announcement for a train heard on the platform: "...nach  Hamburg. Über Hannover, Bielefeld, Dortmund." (...to Hamburg via  Hannover, Bielefeld, Dortmund). There are no direct trains from  Berlin to Hamburg going through these towns. In fact, there are not  even on the way. Going from Berlin straight westward to Cologne you  would get through these cities, Hamburg is farther north and there  is a direct connection without any stops (takes 1,5 hours).