UA 3450 then AA 2410 at Charlotte
Chicago O'Hare → Charlotte → Puerto Plata
Timetable, Charlotte time
13:42UA 3450 from Chicago O'Hare at the gate
11:28AA 2410 to Puerto Plata leaves the gate
21 h 46 apart on the timetable, overnight
AA 2410 leaves 21 h 46 after UA 3450 arrives on the timetable: more than half a day, so not a connection we count.