IB 715 then BA 358 at Heathrow
Madrid → London → Lyon
Timetable, London time
10:35IB 715 from Madrid at the gate
10:15BA 358 to Lyon leaves the gate
23 h 40 apart on the timetable, overnight
BA 358 leaves 23 h 40 after IB 715 arrives on the timetable: more than half a day, so not a connection we count.