SK 4223 then SK 2004 at Arlanda
Vaasa → Stockholm → Lulea
Timetable, Stockholm time
14:25SK 4223 from Vaasa at the gate
06:40SK 2004 to Lulea leaves the gate
16 h 15 apart on the timetable, overnight
SK 2004 leaves 16 h 15 after SK 4223 arrives on the timetable: more than half a day, so not a connection we count.