B6 204 then DL 5665 at Boston
Hamilton → Boston → Richmond
Timetable, Boston time
16:00B6 204 from Hamilton at the gate
15:20DL 5665 to Richmond leaves the gate
23 h 20 apart on the timetable, overnight
DL 5665 leaves 23 h 20 after B6 204 arrives on the timetable: more than half a day, so not a connection we count.