DL 499 then WN 500 at Denver
Boston → Denver → Kansas City
Timetable, Denver time
10:26DL 499 from Boston at the gate
07:30WN 500 to Kansas City leaves the gate
21 h 04 apart on the timetable, overnight
WN 500 leaves 21 h 04 after DL 499 arrives on the timetable: more than half a day, so not a connection we count.