AA 5423 then AA 5801 at Philadelphia
Greenville-Spartanburg → Philadelphia → Harrisburg
Timetable, Philadelphia time
09:50AA 5423 from Greenville-Spartanburg at the gate
13:35AA 5801 to Harrisburg leaves the gate
3 h 45 apart on the timetable
The last days
AA 5423 and AA 5801 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.