AA 6430 then DL 381 at San Francisco
Phoenix → San Francisco → Austin
Timetable, San Francisco time
10:01AA 6430 from Phoenix at the gatealso QR 7617
09:59DL 381 to Austin leaves the gate
23 h 58 apart on the timetable, overnight
DL 381 leaves 23 h 58 after AA 6430 arrives on the timetable: more than half a day, so not a connection we count.