UA 4198 then AA 3346 at O'Hare
LCQ → Chicago → Madison
Timetable, Chicago time
16:20UA 4198 from LCQ at the gate
17:15AA 3346 to Madison leaves the gate
55 min apart on the timetable
The last days
UA 4198 and AA 3346 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.