BA 1443 then BA 826 at Heathrow
Edinburgh → London → Dublin
Timetable, London time
13:05BA 1443 from Edinburgh at the gate
12:30BA 826 to Dublin leaves the gate
23 h 25 apart on the timetable, overnight
BA 826 leaves 23 h 25 after BA 1443 arrives on the timetable: more than half a day, so not a connection we count.