AA 9931 then DL 2106 at Miami
New York LaGuardia → Miami → New York JFK
Timetable, Miami time
09:52AA 9931 from New York LaGuardia at the gate
17:51DL 2106 to New York JFK leaves the gate
7 h 59 apart on the timetable
The last days
AA 9931 and DL 2106 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.