Originally Posted by toctoc

Be aware with the signs going from A to B. When I transfered last week, the elevators to the tunnel were out of order. Thus, the signs were suggesting to leave A to the departure hall and then enter B (with security check) again. Knowing about the stairs i did take the tunnel to B and was there in less than 5 minutes. I guess it would have taken me at least 30 minutes if i would have taken the route that was suggested by FRA.