AA 2443 then DL 5622 at Boston
Philadelphia → Boston → Richmond
Timetable, Boston time
10:18AA 2443 from Philadelphia at the gate
08:50DL 5622 to Richmond leaves the gate
22 h 32 apart on the timetable, overnight
DL 5622 leaves 22 h 32 after AA 2443 arrives on the timetable: more than half a day, so not a connection we count.