BA 773 then NH 212 at Heathrow
Oslo → London → Tokyo
Timetable, London time
22:00BA 773 from Oslo at the gate
19:00NH 212 to Tokyo leaves the gate
21 h apart on the timetable, overnight
NH 212 leaves 21 h after BA 773 arrives on the timetable: more than half a day, so not a connection we count.