UA 4413 then AA 4541 at O'Hare
Madison → Chicago → Indianapolis
Timetable, Chicago time
11:57UA 4413 from Madison at the gate
12:38AA 4541 to Indianapolis leaves the gate
41 min apart on the timetable
The last days
UA 4413 and AA 4541 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.