IB 715 then BA 770 at Heathrow
Madrid → London → Oslo
Timetable, London time
10:35IB 715 from Madrid at the gate
10:20BA 770 to Oslo leaves the gate
23 h 45 apart on the timetable, overnight
BA 770 leaves 23 h 45 after IB 715 arrives on the timetable: more than half a day, so not a connection we count.