W4 6311 then IB 1323 at Madrid
Milan → Madrid → Düsseldorf
Timetable, Madrid time
09:10W4 6311 from Milan at the gate
16:20IB 1323 to Düsseldorf leaves the gate
7 h 10 apart on the timetable
The last days
W4 6311 and IB 1323 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.