KL 9864 then HV 6001 at Schiphol
Brussels → Amsterdam → Porto
Timetable, Amsterdam time
12:19KL 9864 from Brussels at the gate
09:20HV 6001 to Porto leaves the gate
21 h 01 apart on the timetable, overnight
HV 6001 leaves 21 h 01 after KL 9864 arrives on the timetable: more than half a day, so not a connection we count.