AA 5477 then AA 4912 at O'Hare
Madison → Chicago → Grand Rapids
Timetable, Chicago time
08:50AA 5477 from Madison at the gate
13:10AA 4912 to Grand Rapids leaves the gate
4 h 20 apart on the timetable
The last days
AA 5477 and AA 4912 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.