DL 48 then HV 6337 at Schiphol
New York JFK → Amsterdam → Valencia
Timetable, Amsterdam time
08:00DL 48 from New York JFK at the gate
07:25HV 6337 to Valencia leaves the gate
23 h 25 apart on the timetable, overnight
HV 6337 leaves 23 h 25 after DL 48 arrives on the timetable: more than half a day, so not a connection we count.