DY 4356 then DY 4457 at Arlanda
Rome → Stockholm → London Gatwick
Timetable, Stockholm time
16:55DY 4356 from Rome at the gate
14:45DY 4457 to London Gatwick leaves the gate
21 h 50 apart on the timetable, overnight
DY 4457 leaves 21 h 50 after DY 4356 arrives on the timetable: more than half a day, so not a connection we count.