AA 4538 then DL 5718 at Boston
New York LaGuardia → Boston → Newark
Timetable, Boston time
09:42AA 4538 from New York LaGuardia at the gate
17:45DL 5718 to Newark leaves the gate
8 h 03 apart on the timetable
The last days
AA 4538 and DL 5718 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.