SK 711 then SK 527 at Arlanda
Helsinki → Stockholm → London Heathrow
Timetable, Stockholm time
20:05SK 711 from Helsinki at the gate
14:40SK 527 to London Heathrow leaves the gate
18 h 35 apart on the timetable, overnight
SK 527 leaves 18 h 35 after SK 711 arrives on the timetable: more than half a day, so not a connection we count.