OO 9909 then AA 3051 at O'Hare
Waterloo → Chicago → Washington National
Timetable, Chicago time
16:47OO 9909 from Waterloo at the gate
10:55AA 3051 to Washington National leaves the gate
18 h 08 apart on the timetable, overnight
AA 3051 leaves 18 h 08 after OO 9909 arrives on the timetable: more than half a day, so not a connection we count.