AA 9909 then AA 2423 at Phoenix
Salt Lake City → Phoenix → San Diego
Timetable, Phoenix time
14:30AA 9909 from Salt Lake City at the gate
12:20AA 2423 to San Diego leaves the gate
21 h 50 apart on the timetable, overnight
AA 2423 leaves 21 h 50 after AA 9909 arrives on the timetable: more than half a day, so not a connection we count.