Checking in with QF 1st segment MEL-SYD continuing on UA SYD-SFO -- all on UA ticket
I am going to be flying MEL-SYD-SFO next week with the MEL-SYD segment on QF on the same UA ticket. Will I be able to check in at T-24 for the SYD-SFO segment using the UA app or will I have to checkin at the airport? The reason I am asking is because I have a GPU waitlisted on a M fare on SYD-SFO with J2 and would like to optimize the only thing I can control (checkin time) to keep my close-to-zero odds at nonzero.