AA 9909 then WN 1010 at Denver
Los Angeles → Denver → Las Vegas
Timetable, Denver time
16:45AA 9909 from Los Angeles at the gate
16:25WN 1010 to Las Vegas leaves the gate
23 h 40 apart on the timetable, overnight
WN 1010 leaves 23 h 40 after AA 9909 arrives on the timetable: more than half a day, so not a connection we count.