DL 502 then WN 1422 at Detroit
Las Vegas → Detroit → Denver
Timetable, Detroit time
06:10DL 502 from Las Vegas at the gate
18:15WN 1422 to Denver leaves the gate
12 h 05 apart on the timetable
WN 1422 leaves 12 h 05 after DL 502 arrives on the timetable: more than half a day, so not a connection we count.