AA 2553 then AA 2074 at Philadelphia
San Francisco → Philadelphia → Charlotte
Timetable, Philadelphia time
16:54AA 2553 from San Francisco at the gate
17:42AA 2074 to Charlotte leaves the gate
48 min apart on the timetable
The last days
AA 2553 and AA 2074 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.