BA 753 then BA 828 at Heathrow
Geneva → London → Dublin
Timetable, London time
10:00BA 753 from Geneva at the gate
08:25BA 828 to Dublin leaves the gate
22 h 25 apart on the timetable, overnight
BA 828 leaves 22 h 25 after BA 753 arrives on the timetable: more than half a day, so not a connection we count.