AA 566 then WN 1666 at Denver
Dallas-Fort Worth → Denver → Las Vegas
Timetable, Denver time
19:53AA 566 from Dallas-Fort Worth at the gate
19:50WN 1666 to Las Vegas leaves the gate
23 h 57 apart on the timetable, overnight
WN 1666 leaves 23 h 57 after AA 566 arrives on the timetable: more than half a day, so not a connection we count.