FR 819 then EI 168 at Dublin
Edinburgh → Dublin → London Heathrow
Timetable, Dublin time
16:55FR 819 from Edinburgh at the gate
14:15EI 168 to London Heathrow leaves the gate
21 h 20 apart on the timetable, overnight
EI 168 leaves 21 h 20 after FR 819 arrives on the timetable: more than half a day, so not a connection we count.