UA 2864 then AA 2562 at Charlotte
Houston → Charlotte → St Louis
Timetable, Charlotte time
21:59UA 2864 from Houston at the gate
21:40AA 2562 to St Louis leaves the gate
23 h 41 apart on the timetable, overnight
AA 2562 leaves 23 h 41 after UA 2864 arrives on the timetable: more than half a day, so not a connection we count.