UA 3304 then AA 3268 at Charlotte
Pittsburgh → Charlotte → Punta Cana
Timetable, Charlotte time
13:00UA 3304 from Pittsburgh at the gate
07:10AA 3268 to Punta Cana leaves the gate
18 h 10 apart on the timetable, overnight
AA 3268 leaves 18 h 10 after UA 3304 arrives on the timetable: more than half a day, so not a connection we count.