WN 121 then UA 5397 at Denver
Albuquerque → Denver → Sioux Falls
Timetable, Denver time
07:45WN 121 from Albuquerque at the gate
07:40UA 5397 to Sioux Falls leaves the gate
23 h 55 apart on the timetable, overnight
UA 5397 leaves 23 h 55 after WN 121 arrives on the timetable: more than half a day, so not a connection we count.