AA 1428 then UA 2449 at Phoenix
DES → Phoenix → San Diego
Timetable, Phoenix time
10:29AA 1428 from DES at the gate
08:00UA 2449 to San Diego leaves the gate
21 h 31 apart on the timetable, overnight
UA 2449 leaves 21 h 31 after AA 1428 arrives on the timetable: more than half a day, so not a connection we count.