HV 6150 then KL 1521 at Schiphol
Alicante → Amsterdam → Barcelona
Timetable, Amsterdam time
23:35HV 6150 from Alicante at the gate
20:50KL 1521 to Barcelona leaves the gate
21 h 15 apart on the timetable, overnight
KL 1521 leaves 21 h 15 after HV 6150 arrives on the timetable: more than half a day, so not a connection we count.