AA 6350 then AA 1594 at Phoenix
St George → Phoenix → San Diego
Timetable, Phoenix time
08:44AA 6350 from St George at the gate
21:40AA 1594 to San Diego leaves the gate
12 h 56 apart on the timetable
AA 1594 leaves 12 h 56 after AA 6350 arrives on the timetable: more than half a day, so not a connection we count.