WN 893 then UA 728 at Denver
Oklahoma City → Denver → Dallas-Fort Worth
Timetable, Denver time
18:35WN 893 from Oklahoma City at the gate
13:33UA 728 to Dallas-Fort Worth leaves the gate
18 h 58 apart on the timetable, overnight
UA 728 leaves 18 h 58 after WN 893 arrives on the timetable: more than half a day, so not a connection we count.