AA 644 then AA 1762 at Phoenix
Tampa → Phoenix → Denver
Timetable, Phoenix time
20:50AA 644 from Tampa at the gate
16:15AA 1762 to Denver leaves the gate
19 h 25 apart on the timetable, overnight
AA 1762 leaves 19 h 25 after AA 644 arrives on the timetable: more than half a day, so not a connection we count.