AA 516 then B6 2895 at Boston
Washington National → Boston → Punta Cana
Timetable, Boston time
09:38AA 516 from Washington National at the gate
08:45B6 2895 to Punta Cana leaves the gate
23 h 07 apart on the timetable, overnight
B6 2895 leaves 23 h 07 after AA 516 arrives on the timetable: more than half a day, so not a connection we count.