A friend of mine tonight is flying Lufthansa from EWR to PRG via DUS. The flight is due at 6:02am tomorrow in DUS and the connection is scheduled to leave at 7:00am for PRG. Doesn't that seem awfully close? I assume he and his wife will have to go through some form of immigration at DUS. Or will LH hold that connection flight if some of the passengers haven't arrived from their initial flights? Any thoughts about this tight connection?