AA 6276 then UA 545 at San Francisco
Phoenix → San Francisco → Austin
Timetable, San Francisco time
10:03AA 6276 from Phoenix at the gatealso QR 9504
08:40UA 545 to Austin leaves the gatealso AC 5289, VA 8467
22 h 37 apart on the timetable, overnight
UA 545 leaves 22 h 37 after AA 6276 arrives on the timetable: more than half a day, so not a connection we count.