UA 6080 then EI 124 at O'Hare
Sioux City → Chicago → Dublin
Timetable, Chicago time
07:35UA 6080 from Sioux City at the gate
20:05EI 124 to Dublin leaves the gate
12 h 30 apart on the timetable
EI 124 leaves 12 h 30 after UA 6080 arrives on the timetable: more than half a day, so not a connection we count.