I have a GPU I'd like to use. I'm flying HAN-HKG-EWR. Ticket booked on UA metal. The HAN-HKG leg is on KA departing 31 Jan from HAN. The HKG-EWR leg is UA departing 1 Feb. My GPU expires 31 January.

So, question is, will the GPU work on this flight if I book it? KA isn't Star Alliance... it seems to me this should work since the journey starts on 31 January.