HV 6002 then KL 1923 at Schiphol
Porto → Amsterdam → Zurich
Timetable, Amsterdam time
23:55HV 6002 from Porto at the gate
15:20KL 1923 to Zurich leaves the gate
15 h 25 apart on the timetable, overnight
KL 1923 leaves 15 h 25 after HV 6002 arrives on the timetable: more than half a day, so not a connection we count.