DL 1171 then DL 5665 at Boston
Detroit → Boston → Richmond
Timetable, Boston time
15:52DL 1171 from Detroit at the gate
15:23DL 5665 to Richmond leaves the gate
23 h 31 apart on the timetable, overnight
DL 5665 leaves 23 h 31 after DL 1171 arrives on the timetable: more than half a day, so not a connection we count.