DL 8838 then DL 5665 at Boston
Montréal → Boston → Richmond
Timetable, Boston time
17:08DL 8838 from Montréal at the gate
15:20DL 5665 to Richmond leaves the gate
22 h 12 apart on the timetable, overnight
DL 5665 leaves 22 h 12 after DL 8838 arrives on the timetable: more than half a day, so not a connection we count.