BA 893 then EI 723 at Heathrow
Sofia → London → Cork
Timetable, London time
21:50BA 893 from Sofia at the gate
18:05EI 723 to Cork leaves the gate
20 h 15 apart on the timetable, overnight
EI 723 leaves 20 h 15 after BA 893 arrives on the timetable: more than half a day, so not a connection we count.