Originally Posted by
FlightToParadise
If you have to go from one terminal to another, you will see that there's a bus connecting you. The bus goes every 15 minutes, and will take you there very fast (faster than walking).
Correct: if transferring between terminals at FRA the bus (or the skytrain) is much quicker than walking!
However since at FRA all LH flights arrive and depart in T1, OP will not be needing to go from one terminal to another!