AA 3523 then AA 4485 at O'Hare
Baltimore → Chicago → Dayton
Timetable, Chicago time
12:59AA 3523 from Baltimore at the gate
15:33AA 4485 to Dayton leaves the gate
2 h 34 apart on the timetable
The last days
AA 3523 and AA 4485 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.