AA 3073 then DL 5620 at Boston
Philadelphia → Boston → Cincinnati
Timetable, Boston time
17:21AA 3073 from Philadelphia at the gate
17:00DL 5620 to Cincinnati leaves the gate
23 h 39 apart on the timetable, overnight
DL 5620 leaves 23 h 39 after AA 3073 arrives on the timetable: more than half a day, so not a connection we count.