UA 1126 then WN 643 at Denver
Washington → Denver → Orlando
Timetable, Denver time
16:13UA 1126 from Washington at the gate
13:25WN 643 to Orlando leaves the gate
21 h 12 apart on the timetable, overnight
WN 643 leaves 21 h 12 after UA 1126 arrives on the timetable: more than half a day, so not a connection we count.