AA 3879 then AA 1594 at Phoenix
Memphis → Phoenix → San Diego
Timetable, Phoenix time
09:18AA 3879 from Memphis at the gate
21:40AA 1594 to San Diego leaves the gate
12 h 22 apart on the timetable
AA 1594 leaves 12 h 22 after AA 3879 arrives on the timetable: more than half a day, so not a connection we count.