BA 935 then EI 173 at Heathrow
Düsseldorf → London → Dublin
Timetable, London time
18:00BA 935 from Düsseldorf at the gate
17:45EI 173 to Dublin leaves the gate
23 h 45 apart on the timetable, overnight
EI 173 leaves 23 h 45 after BA 935 arrives on the timetable: more than half a day, so not a connection we count.