IB 306 then AA 8727 at Madrid
Monterrey → Madrid → Barcelona
Timetable, Madrid time
13:50IB 306 from Monterrey at the gatealso BA 7180
19:10AA 8727 to Barcelona leaves the gate
5 h 20 apart on the timetable
The last days
IB 306 and AA 8727 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.