SK 1021 then SK 20 at Arlanda
Skelleftea → Stockholm → Lulea
Timetable, Stockholm time
21:30SK 1021 from Skelleftea at the gate
18:40SK 20 to Lulea leaves the gate
21 h 10 apart on the timetable, overnight
SK 20 leaves 21 h 10 after SK 1021 arrives on the timetable: more than half a day, so not a connection we count.