AA 502 then AA 1594 at Phoenix
Mexico City → Phoenix → Austin
Timetable, Phoenix time
18:37AA 502 from Mexico City at the gate
13:58AA 1594 to Austin leaves the gate
19 h 21 apart on the timetable, overnight
AA 1594 leaves 19 h 21 after AA 502 arrives on the timetable: more than half a day, so not a connection we count.