AA 3515 then UA 2788 at O'Hare
Appleton → Chicago → Fort Lauderdale
Timetable, Chicago time
07:12AA 3515 from Appleton at the gate
19:45UA 2788 to Fort Lauderdale leaves the gate
12 h 33 apart on the timetable
UA 2788 leaves 12 h 33 after AA 3515 arrives on the timetable: more than half a day, so not a connection we count.