BA 865 then BA 828 at Heathrow
Prague → London → Dublin
Timetable, London time
08:15BA 865 from Prague at the gate
08:10BA 828 to Dublin leaves the gate
23 h 55 apart on the timetable, overnight
BA 828 leaves 23 h 55 after BA 865 arrives on the timetable: more than half a day, so not a connection we count.