UA 5075 then WN 284 at Denver
Watertown → Denver → Kansas City
Timetable, Denver time
12:25UA 5075 from Watertown at the gate
18:45WN 284 to Kansas City leaves the gate
6 h 20 apart on the timetable
The last days
UA 5075 and WN 284 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.