AA 1670 then UA 3907 at O'Hare
Orlando → Chicago → Washington
Timetable, Chicago time
13:53AA 1670 from Orlando at the gate
12:00UA 3907 to Washington leaves the gate
22 h 07 apart on the timetable, overnight
UA 3907 leaves 22 h 07 after AA 1670 arrives on the timetable: more than half a day, so not a connection we count.