AA 2423 then AA 4005 at O'Hare
Charlotte → Chicago → Madison
Timetable, Chicago time
16:05AA 2423 from Charlotte at the gate
18:59AA 4005 to Madison leaves the gate
2 h 54 apart on the timetable
The last days
AA 2423 and AA 4005 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.