FR 663 then EI 174 at Dublin
Birmingham (UK) → Dublin → London Heathrow
Timetable, Dublin time
19:55FR 663 from Birmingham (UK) at the gate
16:30EI 174 to London Heathrow leaves the gate
20 h 35 apart on the timetable, overnight
EI 174 leaves 20 h 35 after FR 663 arrives on the timetable: more than half a day, so not a connection we count.