AA 126 then AM 9999 at Madrid
Chicago → Madrid → Mexico City
Timetable, Madrid time
09:25AA 126 from Chicago at the gatealso AY 1638, BA 4481
11:45AM 9999 to Mexico City leaves the gate
2 h 20 apart on the timetable
The last days
AA 126 and AM 9999 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.