SK 1768 then SK 14 at Arlanda
Prague → Stockholm → Lulea
Timetable, Stockholm time
21:15SK 1768 from Prague at the gate
15:35SK 14 to Lulea leaves the gate
18 h 20 apart on the timetable, overnight
SK 14 leaves 18 h 20 after SK 1768 arrives on the timetable: more than half a day, so not a connection we count.