FR 4641 then DY 4031 at Arlanda
Riga → Stockholm → Lulea
Timetable, Stockholm time
14:00FR 4641 from Riga at the gate
08:30DY 4031 to Lulea leaves the gate
18 h 30 apart on the timetable, overnight
DY 4031 leaves 18 h 30 after FR 4641 arrives on the timetable: more than half a day, so not a connection we count.