WN 4181 then WN 643 at Denver
Kansas City → Denver → Orlando
Timetable, Denver time
15:45WN 4181 from Kansas City at the gate
13:25WN 643 to Orlando leaves the gate
21 h 40 apart on the timetable, overnight
WN 643 leaves 21 h 40 after WN 4181 arrives on the timetable: more than half a day, so not a connection we count.