WN 686 then WN 284 at Denver
Boise → Denver → Kansas City
Timetable, Denver time
16:35WN 686 from Boise at the gate
18:45WN 284 to Kansas City leaves the gate
2 h 10 apart on the timetable
The last days
WN 686 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.