UA 1380 then WN 643 at Denver
St Louis → Denver → Orlando
Timetable, Denver time
15:09UA 1380 from St Louis at the gate
13:25WN 643 to Orlando leaves the gate
22 h 16 apart on the timetable, overnight
WN 643 leaves 22 h 16 after UA 1380 arrives on the timetable: more than half a day, so not a connection we count.