AA 1148 then AA 4919 at O'Hare
Phoenix → Chicago → Milwaukee
Timetable, Chicago time
05:59AA 1148 from Phoenix at the gate
10:05AA 4919 to Milwaukee leaves the gate
4 h 06 apart on the timetable
The last days
AA 1148 and AA 4919 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.