WN 893 then UA 1521 at Denver
Oklahoma City → Denver → San Antonio
Timetable, Denver time
18:35WN 893 from Oklahoma City at the gate
09:35UA 1521 to San Antonio leaves the gate
15 h apart on the timetable, overnight
UA 1521 leaves 15 h after WN 893 arrives on the timetable: more than half a day, so not a connection we count.