DB is weird. They seem to make their own rules and then run the game and “dont tell the rules to anyone”. I was on my way to catch a flight from Munich to my home (Madrid). I didn’t knew that apparently at one point the train splits into two parts and the front part goes to the airport and the other part just goes to the nearby cattle farms and comes back in 3 hours. Google Maps - No idea Citymapper - what? English a…
I agree that it's not that intuitive that a line can have multiple end stops (like Stuttgart - Munich ends in both Stuttgart and Munich, depending on the direction you are entering?