UA 5209 then AA 6493 at O'Hare
Washington → Chicago → Flint
Timetable, Chicago time
07:30UA 5209 from Washington at the gate
21:30AA 6493 to Flint leaves the gate
14 h apart on the timetable
AA 6493 leaves 14 h after UA 5209 arrives on the timetable: more than half a day, so not a connection we count.