UA 199 then DL 3704 at LAX
Shanghai → Los Angeles → Aspen
Timetable, Los Angeles time
16:35UA 199 from Shanghai at the gate
10:35DL 3704 to Aspen leaves the gate
18 h apart on the timetable, overnight
DL 3704 leaves 18 h after UA 199 arrives on the timetable: more than half a day, so not a connection we count.