AA 2582 then DL 5620 at Boston
Miami → Boston → Cincinnati
Timetable, Boston time
17:05AA 2582 from Miami at the gate
17:00DL 5620 to Cincinnati leaves the gate
23 h 55 apart on the timetable, overnight
DL 5620 leaves 23 h 55 after AA 2582 arrives on the timetable: more than half a day, so not a connection we count.