AA 2764 then AA 897 at Miami
Boston → Miami → New York LaGuardia
Timetable, Miami time
14:50AA 2764 from Boston at the gate
15:26AA 897 to New York LaGuardia leaves the gate
36 min apart on the timetable
The last days
AA 2764 and AA 897 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.