BA 591 then EI 159 at Heathrow
Venezia → London → Dublin
Timetable, London time
13:10BA 591 from Venezia at the gate
12:10EI 159 to Dublin leaves the gate
23 h apart on the timetable, overnight
EI 159 leaves 23 h after BA 591 arrives on the timetable: more than half a day, so not a connection we count.