DS 1527 then SN 3729 at Brussels
Geneva → Brussels → Madrid
Timetable, Brussels time
13:10DS 1527 from Geneva at the gate
17:25SN 3729 to Madrid leaves the gate
4 h 15 apart on the timetable
The last days
DS 1527 and SN 3729 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.