Hello. I have never tried to use a GPU on a Star Alliance flight so hoping someone can assist. I am looking to take a flight from NBO to DEN with a connection in FRA. NBO to FRA is a Lufthansa flight and the FRA to DEN is a United flight. After reading a couple of threads, my understanding is that this will require two GPUs. Is that accurate? Lastly, can anyone tell me if they think it would be likely to get upgraded on the Lufthansa flight (8/9/19, LH591, Fare Class H). Thank you for your assistance!