FR 6920 then EI 184 at Dublin
Barcelona → Dublin → London Heathrow
Timetable, Dublin time
21:40FR 6920 from Barcelona at the gate
19:45EI 184 to London Heathrow leaves the gate
22 h 05 apart on the timetable, overnight
EI 184 leaves 22 h 05 after FR 6920 arrives on the timetable: more than half a day, so not a connection we count.