DY 4006 then DY 4455 at Arlanda
Umea → Stockholm → London Gatwick
Timetable, Stockholm time
11:00DY 4006 from Umea at the gate
10:45DY 4455 to London Gatwick leaves the gate
23 h 45 apart on the timetable, overnight
DY 4455 leaves 23 h 45 after DY 4006 arrives on the timetable: more than half a day, so not a connection we count.