AA 1428 then F9 1748 at Phoenix
DES → Phoenix → Denver
Timetable, Phoenix time
10:29AA 1428 from DES at the gate
10:09F9 1748 to Denver leaves the gate
23 h 40 apart on the timetable, overnight
F9 1748 leaves 23 h 40 after AA 1428 arrives on the timetable: more than half a day, so not a connection we count.