I fly Delta from Detroit to Frankfurt then Lufthansa from Frankfurt to Hannover. My problem is my connection time in Frankfurt is only an hour and 20 min. my bags will be checked through to Hannover and I will already have my boarding pass. Can someone tell me what I should expect while getting off the plane and how to get from Terminal 2 Gates D to Terminal 1 Gates A quickly? What security/customs/immigration/passport control will I have to go through???