AA 1240 then AA 2271 at Miami
Hartford → Miami → New York LaGuardia
Timetable, Miami time
09:00AA 1240 from Hartford at the gate
17:22AA 2271 to New York LaGuardia leaves the gate
8 h 22 apart on the timetable
The last days
AA 1240 and AA 2271 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.