OO 225 then UA 422 at O'Hare
Richmond → Chicago → Portland (Maine)
Timetable, Chicago time
11:48OO 225 from Richmond at the gate
10:50UA 422 to Portland (Maine) leaves the gate
23 h 02 apart on the timetable, overnight
UA 422 leaves 23 h 02 after OO 225 arrives on the timetable: more than half a day, so not a connection we count.