KL 1826 then HV 6003 at Schiphol
Stuttgart → Amsterdam → Porto
Timetable, Amsterdam time
07:30KL 1826 from Stuttgart at the gate
06:50HV 6003 to Porto leaves the gate
23 h 20 apart on the timetable, overnight
HV 6003 leaves 23 h 20 after KL 1826 arrives on the timetable: more than half a day, so not a connection we count.