KL 1708 then HV 6003 at Schiphol
Luxembourg → Amsterdam → Porto
Timetable, Amsterdam time
07:15KL 1708 from Luxembourg at the gate
06:50HV 6003 to Porto leaves the gate
23 h 35 apart on the timetable, overnight
HV 6003 leaves 23 h 35 after KL 1708 arrives on the timetable: more than half a day, so not a connection we count.