KL 1530 then U2 7925 at Schiphol
Valencia → Amsterdam → Prague
Timetable, Amsterdam time
08:40KL 1530 from Valencia at the gate
07:00U2 7925 to Prague leaves the gate
22 h 20 apart on the timetable, overnight
U2 7925 leaves 22 h 20 after KL 1530 arrives on the timetable: more than half a day, so not a connection we count.