WN 209 then UA 501 at Denver
St Louis → Denver → Orlando
Timetable, Denver time
18:50WN 209 from St Louis at the gate
14:00UA 501 to Orlando leaves the gate
19 h 10 apart on the timetable, overnight
UA 501 leaves 19 h 10 after WN 209 arrives on the timetable: more than half a day, so not a connection we count.