AA 3067 then AA 2685 at Boston
Chicago O'Hare → Boston → Philadelphia
Timetable, Boston time
10:28AA 3067 from Chicago O'Hare at the gate
11:21AA 2685 to Philadelphia leaves the gate
53 min apart on the timetable
The last days
AA 3067 and AA 2685 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.