U2 7900 then KL 1713 at Schiphol
Valencia → Amsterdam → Luxembourg
Timetable, Amsterdam time
17:50U2 7900 from Valencia at the gate
16:50KL 1713 to Luxembourg leaves the gate
23 h apart on the timetable, overnight
KL 1713 leaves 23 h after U2 7900 arrives on the timetable: more than half a day, so not a connection we count.