SK 1842 then BA 783 at Arlanda
Rome → Stockholm → London Heathrow
Timetable, Stockholm time
23:55SK 1842 from Rome at the gate
20:30BA 783 to London Heathrow leaves the gate
20 h 35 apart on the timetable, overnight
BA 783 leaves 20 h 35 after SK 1842 arrives on the timetable: more than half a day, so not a connection we count.