AA 3987 then AA 3268 at Charlotte
Springfield → Charlotte → Punta Cana
Timetable, Charlotte time
15:09AA 3987 from Springfield at the gate
07:10AA 3268 to Punta Cana leaves the gate
16 h 01 apart on the timetable, overnight
AA 3268 leaves 16 h 01 after AA 3987 arrives on the timetable: more than half a day, so not a connection we count.