OO 9909 then AA 4190 at O'Hare
Waterloo → Chicago → Roanoke
Timetable, Chicago time
16:47OO 9909 from Waterloo at the gate
13:23AA 4190 to Roanoke leaves the gate
20 h 36 apart on the timetable, overnight
AA 4190 leaves 20 h 36 after OO 9909 arrives on the timetable: more than half a day, so not a connection we count.