SK 1768 then FR 4642 at Arlanda
Prague → Stockholm → Riga
Timetable, Stockholm time
21:15SK 1768 from Prague at the gate
16:45FR 4642 to Riga leaves the gate
19 h 30 apart on the timetable, overnight
FR 4642 leaves 19 h 30 after SK 1768 arrives on the timetable: more than half a day, so not a connection we count.