WN 864 then UA 5773 at Denver
Burbank → Denver → Aspen
Timetable, Denver time
16:35WN 864 from Burbank at the gate
16:00UA 5773 to Aspen leaves the gate
23 h 25 apart on the timetable, overnight
UA 5773 leaves 23 h 25 after WN 864 arrives on the timetable: more than half a day, so not a connection we count.