FR 819 then EI 143 at Dublin
Edinburgh → Dublin → Cancún
Timetable, Dublin time
16:55FR 819 from Edinburgh at the gate
13:35EI 143 to Cancún leaves the gate
20 h 40 apart on the timetable, overnight
EI 143 leaves 20 h 40 after FR 819 arrives on the timetable: more than half a day, so not a connection we count.