Sometimes, the timetable selection results is the wrong route. I am not sure what triggers this to happen, but it is rather consistent. In the example above, I selected Kassel-WÜrzburg Then select timetable and to my surprise I see Cathcart Circle locomotives. . It also happened I saw Cane Creek instead of Kassel-Würzburg. I have seen this behaviour multiple times on different occasions. It looks like the game tries to select the timetable (pushing the big icon), but instead of showing the correct next screen, it switches to another route. You can see that because the number of services changes. If you press the Back key form the last screen, it shows the correct set of locos, but when you now select on foot, it lands in Cathcart Circle again.
