WN 893 then UA 1337 at Denver
Oklahoma City → Denver → Portland (Oregon)
Timetable, Denver time
18:35WN 893 from Oklahoma City at the gate
16:15UA 1337 to Portland (Oregon) leaves the gate
21 h 40 apart on the timetable, overnight
UA 1337 leaves 21 h 40 after WN 893 arrives on the timetable: more than half a day, so not a connection we count.