BA 1385 then SK 534 at Heathrow
Manchester → London → Stockholm
Timetable, London time
08:55BA 1385 from Manchester at the gate
21:05SK 534 to Stockholm leaves the gate
12 h 10 apart on the timetable
SK 534 leaves 12 h 10 after BA 1385 arrives on the timetable: more than half a day, so not a connection we count.