AA 3067 then AA 504 at Boston
Chicago O'Hare → Boston → Charlotte
Timetable, Boston time
10:27AA 3067 from Chicago O'Hare at the gate
11:23AA 504 to Charlotte leaves the gate
56 min apart on the timetable
Boston’s board gives an arrival time for only about 58% of its flights, so many days show no gate time.
The last days
AA 3067 and AA 504 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.