Originally Posted by Track

RE and RB trains in Germany and all trains in Switzerland are not restricted, so a through ticket Ravensburg-Zurich via Schaffhausen would allow you to travel on any train. And then Friedrichshafen to Lindau-Reutin is in the opposite direction as Friedrichshafen to Schaffhausen. It would be possible to travel Ravensburg-Friedrichshafen-Lindau to Zurich with a connection in Friedrichshafen to a local train and in Lindau-Reutin to the (restricted, as it's an international connection on an upper-class train) Munich-Zurich Eurocity train. Which do you have? The earlier train you mentioned (12:12 from Ravensburg) is an RE to Lindau-Reutin and thus avoid the transfer at Friedrichshafen.