KL 1020 then U2 7925 at Schiphol
Leeds → Amsterdam → Prague
Timetable, Amsterdam time
12:25KL 1020 from Leeds at the gate
07:00U2 7925 to Prague leaves the gate
18 h 35 apart on the timetable, overnight
U2 7925 leaves 18 h 35 after KL 1020 arrives on the timetable: more than half a day, so not a connection we count.