BA 504 then EC 7641 at Lisbon
London Heathrow → Lisbon → Geneva
Timetable, Lisbon time
12:05BA 504 from London Heathrow at the gate
06:10EC 7641 to Geneva leaves the gate
18 h 05 apart on the timetable, overnight
EC 7641 leaves 18 h 05 after BA 504 arrives on the timetable: more than half a day, so not a connection we count.