AA 2978 then AA 1594 at Phoenix
Mazatlan → Phoenix → Austin
Timetable, Phoenix time
16:35AA 2978 from Mazatlan at the gate
13:58AA 1594 to Austin leaves the gate
21 h 23 apart on the timetable, overnight
AA 1594 leaves 21 h 23 after AA 2978 arrives on the timetable: more than half a day, so not a connection we count.