AA 4381 then AA 6241 at O'Hare
Grand Rapids → Chicago → Milwaukee
Timetable, Chicago time
06:09AA 4381 from Grand Rapids at the gate
06:59AA 6241 to Milwaukee leaves the gate
50 min apart on the timetable
The last days
AA 4381 and AA 6241 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.