SK 1768 then SK 1527 at Arlanda
Prague → Stockholm → London Heathrow
Timetable, Stockholm time
21:15SK 1768 from Prague at the gate
19:35SK 1527 to London Heathrow leaves the gate
22 h 20 apart on the timetable, overnight
SK 1527 leaves 22 h 20 after SK 1768 arrives on the timetable: more than half a day, so not a connection we count.