EI 135 then AA 4582 at Boston
Shannon → Boston → Washington National
Timetable, Boston time
16:15EI 135 from Shannon at the gate
14:30AA 4582 to Washington National leaves the gate
22 h 15 apart on the timetable, overnight
AA 4582 leaves 22 h 15 after EI 135 arrives on the timetable: more than half a day, so not a connection we count.