UA 3468 then AA 2410 at Charlotte
Newark → Charlotte → Puerto Plata
Timetable, Charlotte time
12:39UA 3468 from Newark at the gate
11:28AA 2410 to Puerto Plata leaves the gate
22 h 49 apart on the timetable, overnight
AA 2410 leaves 22 h 49 after UA 3468 arrives on the timetable: more than half a day, so not a connection we count.