FR 819 then EI 123 at Dublin
Edinburgh → Dublin → Chicago
Timetable, Dublin time
16:55FR 819 from Edinburgh at the gate
11:30EI 123 to Chicago leaves the gate
18 h 35 apart on the timetable, overnight
EI 123 leaves 18 h 35 after FR 819 arrives on the timetable: more than half a day, so not a connection we count.