AA 2591 then AA 2262 at Miami
Boston → Miami → New York LaGuardia
Timetable, Miami time
08:37AA 2591 from Boston at the gate
19:40AA 2262 to New York LaGuardia leaves the gate
11 h 03 apart on the timetable
The last days
AA 2591 and AA 2262 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.