the next natural redo must be Köln -Aachen so that we can reach Brussels so as to go on to Lille to catch the TGV to Paris. If you land at Amsterdam Schipol, you catch which train to Gröningen to reach Bremen or Hamburg ? Fulda is on my run up to Braunschweig, btw. Braunschweig lies on the line Hannover Magdeburg Berlin ... Warsaw. But if Mannheim can just run me into Heidelberg or up to Darmstadt ... When the train from Mainz reaches Köln ...