F9 1280 then AA 9606 at Miami
Denver → Miami → New York JFK
Timetable, Miami time
00:44F9 1280 from Denver at the gate
11:00AA 9606 to New York JFK leaves the gate
10 h 16 apart on the timetable
The last days
F9 1280 and AA 9606 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.