AA 4707 then AA 1776 at Boston
New York JFK → Boston → Philadelphia
Timetable, Boston time
12:15AA 4707 from New York JFK at the gate
16:00AA 1776 to Philadelphia leaves the gate
3 h 45 apart on the timetable
The last days
AA 4707 and AA 1776 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.