UA 1436 then WN 643 at Denver
Missoula → Denver → Orlando
Timetable, Denver time
16:45UA 1436 from Missoula at the gate
13:25WN 643 to Orlando leaves the gate
20 h 40 apart on the timetable, overnight
WN 643 leaves 20 h 40 after UA 1436 arrives on the timetable: more than half a day, so not a connection we count.