KL 1844 then U2 7899 at Schiphol
Nuremberg → Amsterdam → Valencia
Timetable, Amsterdam time
15:40KL 1844 from Nuremberg at the gate
12:00U2 7899 to Valencia leaves the gate
20 h 20 apart on the timetable, overnight
U2 7899 leaves 20 h 20 after KL 1844 arrives on the timetable: more than half a day, so not a connection we count.