WN 893 then UA 1561 at Denver
Oklahoma City → Denver → San Francisco
Timetable, Denver time
18:35WN 893 from Oklahoma City at the gate
11:20UA 1561 to San Francisco leaves the gate
16 h 45 apart on the timetable, overnight
UA 1561 leaves 16 h 45 after WN 893 arrives on the timetable: more than half a day, so not a connection we count.