AA 2243 then AA 928 at Miami
Philadelphia → Miami → Chicago O'Hare
Timetable, Miami time
16:10AA 2243 from Philadelphia at the gate
17:01AA 928 to Chicago O'Hare leaves the gate
51 min apart on the timetable
The last days
AA 2243 and AA 928 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.