AA 1794 then UA 1963 at Charlotte
Nashville → Charlotte → Denver
Timetable, Charlotte time
09:02AA 1794 from Nashville at the gate
08:36UA 1963 to Denver leaves the gate
23 h 34 apart on the timetable, overnight
UA 1963 leaves 23 h 34 after AA 1794 arrives on the timetable: more than half a day, so not a connection we count.