HV 6338 then U2 2514 at Schiphol
Valencia → Amsterdam → London Luton
Timetable, Amsterdam time
13:20HV 6338 from Valencia at the gate
10:45U2 2514 to London Luton leaves the gate
21 h 25 apart on the timetable, overnight
U2 2514 leaves 21 h 25 after HV 6338 arrives on the timetable: more than half a day, so not a connection we count.