AA 2196 then AA 2645 at Houston
Philadelphia → Houston → Chicago
Timetable, Houston time
11:34AA 2196 from Philadelphia at the gate
14:32AA 2645 to Chicago leaves the gate
2 h 58 apart on the timetable
The last days
AA 2196 and AA 2645 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.