SK 1768 then SK 16 at Arlanda
Prague → Stockholm → Lulea
Timetable, Stockholm time
21:15SK 1768 from Prague at the gate
18:00SK 16 to Lulea leaves the gate
20 h 45 apart on the timetable, overnight
SK 16 leaves 20 h 45 after SK 1768 arrives on the timetable: more than half a day, so not a connection we count.