WN 893 then UA 4797 at Denver
Oklahoma City → Denver → Casper
Timetable, Denver time
18:35WN 893 from Oklahoma City at the gate
13:25UA 4797 to Casper leaves the gate
18 h 50 apart on the timetable, overnight
UA 4797 leaves 18 h 50 after WN 893 arrives on the timetable: more than half a day, so not a connection we count.