AA 2879 then AA 3268 at Charlotte
Chicago O'Hare → Charlotte → Punta Cana
Timetable, Charlotte time
14:48AA 2879 from Chicago O'Hare at the gate
07:10AA 3268 to Punta Cana leaves the gate
16 h 22 apart on the timetable, overnight
AA 3268 leaves 16 h 22 after AA 2879 arrives on the timetable: more than half a day, so not a connection we count.