UA 3922 then AA 3316 at O'Hare
Savannah → Chicago → Los Angeles
Timetable, Chicago time
02:36UA 3922 from Savannah at the gate
15:25AA 3316 to Los Angeles leaves the gate
12 h 49 apart on the timetable
AA 3316 leaves 12 h 49 after UA 3922 arrives on the timetable: more than half a day, so not a connection we count.