UA 281 then WN 500 at Denver
Houston → Denver → Kansas City
Timetable, Denver time
11:22UA 281 from Houston at the gate
07:30WN 500 to Kansas City leaves the gate
20 h 08 apart on the timetable, overnight
WN 500 leaves 20 h 08 after UA 281 arrives on the timetable: more than half a day, so not a connection we count.