EC 4427 then BA 505 at Lisbon
Lyon → Lisbon → London Heathrow
Timetable, Lisbon time
17:10EC 4427 from Lyon at the gate
12:55BA 505 to London Heathrow leaves the gate
19 h 45 apart on the timetable, overnight
BA 505 leaves 19 h 45 after EC 4427 arrives on the timetable: more than half a day, so not a connection we count.