AA 4518 then AA 5525 at Philadelphia
Indianapolis → Philadelphia → Toronto
Timetable, Philadelphia time
18:46AA 4518 from Indianapolis at the gate
19:55AA 5525 to Toronto leaves the gate
1 h 09 apart on the timetable
The last days
AA 4518 and AA 5525 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.