AA 2208 then AA 3566 at O'Hare
St Louis → Chicago → Cleveland
Timetable, Chicago time
12:59AA 2208 from St Louis at the gate
21:20AA 3566 to Cleveland leaves the gate
8 h 21 apart on the timetable
The last days
AA 2208 and AA 3566 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.