BA 8083 then EC 7109 at Barcelona
London Heathrow → Barcelona → Geneva
Timetable, Barcelona time
13:10BA 8083 from London Heathrow at the gate
10:30EC 7109 to Geneva leaves the gate
21 h 20 apart on the timetable, overnight
EC 7109 leaves 21 h 20 after BA 8083 arrives on the timetable: more than half a day, so not a connection we count.