AA 712 then AA 2440 at JFK
Miami → New York → Las Vegas
Timetable, New York time
11:00AA 712 from Miami at the gate
20:00AA 2440 to Las Vegas leaves the gate
9 h apart on the timetable
The last days
AA 712 and AA 2440 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.