UA 3501 then AA 4524 at O'Hare
Detroit → Chicago → Memphis
Timetable, Chicago time
06:57UA 3501 from Detroit at the gate
11:50AA 4524 to Memphis leaves the gate
4 h 53 apart on the timetable
The last days
UA 3501 and AA 4524 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.