FR 661 then UA 981 at Dublin
Birmingham (UK) → Dublin → Chicago
Timetable, Dublin time
15:25FR 661 from Birmingham (UK) at the gate
10:40UA 981 to Chicago leaves the gate
19 h 15 apart on the timetable, overnight
UA 981 leaves 19 h 15 after FR 661 arrives on the timetable: more than half a day, so not a connection we count.