SK 1768 then SK 52 at Arlanda
Prague → Stockholm → Sundsvall
Timetable, Stockholm time
21:15SK 1768 from Prague at the gate
14:15SK 52 to Sundsvall leaves the gate
17 h apart on the timetable, overnight
SK 52 leaves 17 h after SK 1768 arrives on the timetable: more than half a day, so not a connection we count.