WN 1968 then UA 5481 at Denver
Spokane → Denver → Springfield
Timetable, Denver time
10:00WN 1968 from Spokane at the gate
09:40UA 5481 to Springfield leaves the gate
23 h 40 apart on the timetable, overnight
UA 5481 leaves 23 h 40 after WN 1968 arrives on the timetable: more than half a day, so not a connection we count.