FR 4641 then SK 1897 at Arlanda
Riga → Stockholm → Rome
Timetable, Stockholm time
14:00FR 4641 from Riga at the gate
08:40SK 1897 to Rome leaves the gate
18 h 40 apart on the timetable, overnight
SK 1897 leaves 18 h 40 after FR 4641 arrives on the timetable: more than half a day, so not a connection we count.