DL 473 then DL 675 at Boston
Seattle → Boston → Kansas City
Timetable, Boston time
07:35DL 473 from Seattle at the gate
06:10DL 675 to Kansas City leaves the gate
22 h 35 apart on the timetable, overnight
DL 675 leaves 22 h 35 after DL 473 arrives on the timetable: more than half a day, so not a connection we count.