AA 2137 then AA 3429 at O'Hare
Austin → Chicago → Cleveland
Timetable, Chicago time
09:00AA 2137 from Austin at the gate
09:45AA 3429 to Cleveland leaves the gate
45 min apart on the timetable
The last days
AA 2137 and AA 3429 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.