AA 1155 then B6 8353 at Boston
Charlotte → Boston → New York JFK
Timetable, Boston time
19:59AA 1155 from Charlotte at the gate
20:30B6 8353 to New York JFK leaves the gate
31 min apart on the timetable
The last days
AA 1155 and B6 8353 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.