UA 913 then GB 397 at O'Hare
Reykjavík → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
12:55UA 913 from Reykjavík at the gate
07:00GB 397 to Cincinnati Northern Kentucky leaves the gate
18 h 05 apart on the timetable, overnight
GB 397 leaves 18 h 05 after UA 913 arrives on the timetable: more than half a day, so not a connection we count.