SK 29 then SK 527 at Arlanda
Umea → Stockholm → London Heathrow
Timetable, Stockholm time
15:50SK 29 from Umea at the gate
15:20SK 527 to London Heathrow leaves the gate
23 h 30 apart on the timetable, overnight
SK 527 leaves 23 h 30 after SK 29 arrives on the timetable: more than half a day, so not a connection we count.