SK 7 then DY 4457 at Arlanda
Lulea → Stockholm → London Gatwick
Timetable, Stockholm time
20:25SK 7 from Lulea at the gate
14:45DY 4457 to London Gatwick leaves the gate
18 h 20 apart on the timetable, overnight
DY 4457 leaves 18 h 20 after SK 7 arrives on the timetable: more than half a day, so not a connection we count.