BA 8497 then HV 6003 at Schiphol
London City → Amsterdam → Porto
Timetable, Amsterdam time
09:25BA 8497 from London City at the gate
06:50HV 6003 to Porto leaves the gate
21 h 25 apart on the timetable, overnight
HV 6003 leaves 21 h 25 after BA 8497 arrives on the timetable: more than half a day, so not a connection we count.