AA 2303 then AA 1762 at Phoenix
St Louis → Phoenix → Denver
Timetable, Phoenix time
16:48AA 2303 from St Louis at the gate
16:15AA 1762 to Denver leaves the gate
23 h 27 apart on the timetable, overnight
AA 1762 leaves 23 h 27 after AA 2303 arrives on the timetable: more than half a day, so not a connection we count.