UA 2819 then WN 643 at Denver
Milwaukee → Denver → Orlando
Timetable, Denver time
16:22UA 2819 from Milwaukee at the gate
13:25WN 643 to Orlando leaves the gate
21 h 03 apart on the timetable, overnight
WN 643 leaves 21 h 03 after UA 2819 arrives on the timetable: more than half a day, so not a connection we count.