AA 4394 then DL 5622 at Boston
New York LaGuardia → Boston → Richmond
Timetable, Boston time
09:07AA 4394 from New York LaGuardia at the gate
08:50DL 5622 to Richmond leaves the gate
23 h 43 apart on the timetable, overnight
DL 5622 leaves 23 h 43 after AA 4394 arrives on the timetable: more than half a day, so not a connection we count.