Originally Posted by
olm022
As for the luggage... Hmm, that's a tricky one. Are your FRA-LAS flights on one ticket? If not, agents in FRA may argue that for your FRA-BRU you can only have 'weight *G allowance.' If the complete trip is on one ticket, and your EU-US flight is in C, I'd imagine you can have 3 pieces 32kg each.
How did it happen that FRA-BRU is in M?
It is all a UA ticket booked in Y (I presume M is economy) upgraded with SWUs. I can only upgrade the UA legs with SWUs so the LH feeder flights are in Economy.