UA 646 then WN 8608 at Denver
Chicago O'Hare → Denver → Dallas
Timetable, Denver time
15:17UA 646 from Chicago O'Hare at the gate
18:00WN 8608 to Dallas leaves the gate
2 h 43 apart on the timetable
The last days
UA 646 and WN 8608 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.