WN 2913 then AA 5122 at Philadelphia
Chicago Midway → Philadelphia → Detroit
Timetable, Philadelphia time
11:55WN 2913 from Chicago Midway at the gate
13:35AA 5122 to Detroit leaves the gate
1 h 40 apart on the timetable
The last days
WN 2913 and AA 5122 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.