AA 864 then AA 3893 at Charlotte
Chicago O'Hare → Charlotte → Greensboro
Timetable, Charlotte time
19:52AA 864 from Chicago O'Hare at the gate
19:30AA 3893 to Greensboro leaves the gate
23 h 38 apart on the timetable, overnight
AA 3893 leaves 23 h 38 after AA 864 arrives on the timetable: more than half a day, so not a connection we count.