Tried to make a booking on Condor FRA-LAX.
Looks like that the flight is not direct. There 1 stop either in Seatle, or Portland, or Vancouver. From there onward you go with another airline with whom they happen to have an agreement.
In any case had a look at how long is the sector from FRA to Seatle or Portland. If I got it correct, FRA to Portland is advertised as being 10:55 flight. Still, have to say that if they doing that with 296 Pax, then there is a remarkable benefit from the Winglets.
Happy research!