AA 5189 then AA 5266 at Philadelphia
Jacksonville → Philadelphia → Greensboro
Timetable, Philadelphia time
08:25AA 5189 from Jacksonville at the gate
13:11AA 5266 to Greensboro leaves the gate
4 h 46 apart on the timetable
The last days
AA 5189 and AA 5266 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.