UA 1587 then WN 643 at Denver
Washington → Denver → Orlando
Timetable, Denver time
14:48UA 1587 from Washington at the gate
13:25WN 643 to Orlando leaves the gate
22 h 37 apart on the timetable, overnight
WN 643 leaves 22 h 37 after UA 1587 arrives on the timetable: more than half a day, so not a connection we count.