UA 4179 then AA 6364 at O'Hare
Roanoke → Chicago → Waterloo
Timetable, Chicago time
07:44UA 4179 from Roanoke at the gate
22:15AA 6364 to Waterloo leaves the gate
14 h 31 apart on the timetable
AA 6364 leaves 14 h 31 after UA 4179 arrives on the timetable: more than half a day, so not a connection we count.