DL 132 then 2L 9525 at Schiphol
Detroit → Amsterdam → Zurich
Timetable, Amsterdam time
06:00DL 132 from Detroit at the gate
10:002L 9525 to Zurich leaves the gate
4 h apart on the timetable
The last days
DL 132 and 2L 9525 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.