DY 4572 then SK 527 at Arlanda
Prague → Stockholm → London Heathrow
Timetable, Stockholm time
23:20DY 4572 from Prague at the gate
15:20SK 527 to London Heathrow leaves the gate
16 h apart on the timetable, overnight
SK 527 leaves 16 h after DY 4572 arrives on the timetable: more than half a day, so not a connection we count.