AA 3276 then AA 1857 at Philadelphia
Los Angeles → Philadelphia → Miami
Timetable, Philadelphia time
06:05AA 3276 from Los Angeles at the gate
07:15AA 1857 to Miami leaves the gate
1 h 10 apart on the timetable
The last days
AA 3276 and AA 1857 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.