UA 2864 then AA 2559 at Charlotte
Houston → Charlotte → Detroit
Timetable, Charlotte time
21:59UA 2864 from Houston at the gate
20:51AA 2559 to Detroit leaves the gate
22 h 52 apart on the timetable, overnight
AA 2559 leaves 22 h 52 after UA 2864 arrives on the timetable: more than half a day, so not a connection we count.