AA 9909 then UA 5118 at Denver
Los Angeles → Denver → Laramie
Timetable, Denver time
16:45AA 9909 from Los Angeles at the gate
16:40UA 5118 to Laramie leaves the gate
23 h 55 apart on the timetable, overnight
UA 5118 leaves 23 h 55 after AA 9909 arrives on the timetable: more than half a day, so not a connection we count.