Originally Posted by
cesco.g
So it seems, a 45 min connection (OS>LH, no luggage) would be doable, assuming no inbound flight delay then.
Yes, no problem. (With a bit of luck you'll simply have to walk to the gate next to the one where you arrive...

)
Just know that in case of irregularities with the 2nd flight (cancellation for instance), and you cannot solve them online or by phone, you will have to leave airside to talk to someone of LH. There is no transfer desk for LH group companies airside.