KL 536 then U2 7927 at Schiphol
Kigali → Amsterdam → Prague
Timetable, Amsterdam time
07:35KL 536 from Kigali at the gate
13:10U2 7927 to Prague leaves the gate
5 h 35 apart on the timetable
The last days
KL 536 and U2 7927 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.