FR 275 then EI 123 at Dublin
Glasgow → Dublin → Chicago
Timetable, Dublin time
19:40FR 275 from Glasgow at the gate
11:30EI 123 to Chicago leaves the gate
15 h 50 apart on the timetable, overnight
EI 123 leaves 15 h 50 after FR 275 arrives on the timetable: more than half a day, so not a connection we count.