KL 628 then SK 6706 at Schiphol
Miami → Amsterdam → Madrid
Timetable, Amsterdam time
07:35KL 628 from Miami at the gate
13:35SK 6706 to Madrid leaves the gate
6 h apart on the timetable
The last days
KL 628 and SK 6706 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.