SK 1768 then SK 34 at Arlanda
Prague → Stockholm → Umea
Timetable, Stockholm time
21:15SK 1768 from Prague at the gate
17:55SK 34 to Umea leaves the gate
20 h 40 apart on the timetable, overnight
SK 34 leaves 20 h 40 after SK 1768 arrives on the timetable: more than half a day, so not a connection we count.