FR 4641 then FR 4718 at Arlanda
Riga → Stockholm → London Stansted
Timetable, Stockholm time
14:00FR 4641 from Riga at the gate
06:30FR 4718 to London Stansted leaves the gate
16 h 30 apart on the timetable, overnight
FR 4718 leaves 16 h 30 after FR 4641 arrives on the timetable: more than half a day, so not a connection we count.