AA 6366 then KJ 248 at O'Hare
Waterloo → Chicago → Atlanta
Timetable, Chicago time
07:39AA 6366 from Waterloo at the gate
05:10KJ 248 to Atlanta leaves the gate
21 h 31 apart on the timetable, overnight
KJ 248 leaves 21 h 31 after AA 6366 arrives on the timetable: more than half a day, so not a connection we count.