Originally Posted by
Fireflyer05
If you only have hand luggage, and you have the necessary visas to enter Germany, German border control won't care.
+1 OP if all you travel with is carry-on then you can do as you please in FRA, but bear in mind you will lose the FRA-LED part of the tkt. thats assuming 1 you are flying with a Russian Passport so no problems at SFO, and 2 you dont need a Visa to enter Germany or any other Country you want to.
No Russian PP then you will need a Russian Visa otherwise they wont let you board at SFO, even if you tell them you arent going to Russia (or you have a PP from a Country that doesnt need a Visa to enter Russia), if anything they will refare your tkt if you tell them that and you may have to pay more $$ before they let you board
Extremely difficult if not impossible nowadays to get a bag/s checked only to the connection city