UA 405 then WN 1749 at Denver
Louisville → Denver → Dallas
Timetable, Denver time
09:04UA 405 from Louisville at the gate
05:35WN 1749 to Dallas leaves the gate
20 h 31 apart on the timetable, overnight
WN 1749 leaves 20 h 31 after UA 405 arrives on the timetable: more than half a day, so not a connection we count.