UA 3499 then AA 2131 at Charlotte
Chicago O'Hare → Charlotte → Saint Martin
Timetable, Charlotte time
17:12UA 3499 from Chicago O'Hare at the gate
08:27AA 2131 to Saint Martin leaves the gate
15 h 15 apart on the timetable, overnight
AA 2131 leaves 15 h 15 after UA 3499 arrives on the timetable: more than half a day, so not a connection we count.