WN 893 then UA 5481 at Denver
Oklahoma City → Denver → Springfield
Timetable, Denver time
18:35WN 893 from Oklahoma City at the gate
09:40UA 5481 to Springfield leaves the gate
15 h 05 apart on the timetable, overnight
UA 5481 leaves 15 h 05 after WN 893 arrives on the timetable: more than half a day, so not a connection we count.