UA 4607 then DL 3704 at LAX
Phoenix Sky Harbor → Los Angeles → Aspen
Timetable, Los Angeles time
16:27UA 4607 from Phoenix Sky Harbor at the gate
10:35DL 3704 to Aspen leaves the gate
18 h 08 apart on the timetable, overnight
DL 3704 leaves 18 h 08 after UA 4607 arrives on the timetable: more than half a day, so not a connection we count.