AA 2155 then UA 2324 at O'Hare
Hartford → Chicago → Kansas City
Timetable, Chicago time
14:20AA 2155 from Hartford at the gate
19:59UA 2324 to Kansas City leaves the gate
5 h 39 apart on the timetable
The last days
AA 2155 and UA 2324 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.