AA 2346 then AA 430 at LAX
Miami → Los Angeles → New York JFK
Timetable, Los Angeles time
22:39AA 2346 from Miami at the gate
23:34AA 430 to New York JFK leaves the gate
55 min apart on the timetable
The last days
AA 2346 and AA 430 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.