Originally Posted by
NewbieRunner
No need to collect checked bags in FRA. 1h40m layover in FRA could be tight but they'll put you on the next available flight if you are on one ticket and miss your connection. 1h25m should be fine in both MUC and DUS.
+1 to this as well, although I'd probably opt for the 2h40m connection in FRA. I have run into enough cases where my inbound was delayed, and the flight I was rebooked on was the second available flight, not the next one, even though I would have made the next one if I had been booked on it originally.