UA 2864 then AA 1502 at Charlotte
Houston → Charlotte → Nashville
Timetable, Charlotte time
21:59UA 2864 from Houston at the gate
20:05AA 1502 to Nashville leaves the gate
22 h 06 apart on the timetable, overnight
AA 1502 leaves 22 h 06 after UA 2864 arrives on the timetable: more than half a day, so not a connection we count.