SY 8703 then UA 709 at O'Hare
Denver → Chicago → Kansas City
Timetable, Chicago time
02:41SY 8703 from Denver at the gate
07:00UA 709 to Kansas City leaves the gate
4 h 19 apart on the timetable
The last days
SY 8703 and UA 709 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.