DL 1798 then DL 5665 at Boston
Kansas City → Boston → Richmond
Timetable, Boston time
17:05DL 1798 from Kansas City at the gate
15:20DL 5665 to Richmond leaves the gate
22 h 15 apart on the timetable, overnight
DL 5665 leaves 22 h 15 after DL 1798 arrives on the timetable: more than half a day, so not a connection we count.