FR 815 then EI 386 at Dublin
Edinburgh → Dublin → London Heathrow
Timetable, Dublin time
20:25FR 815 from Edinburgh at the gate
19:45EI 386 to London Heathrow leaves the gate
23 h 20 apart on the timetable, overnight
EI 386 leaves 23 h 20 after FR 815 arrives on the timetable: more than half a day, so not a connection we count.