UA 5192 then AA 2212 at O'Hare
Jacksonville → Chicago → Santa Ana
Timetable, Chicago time
17:30UA 5192 from Jacksonville at the gate
11:56AA 2212 to Santa Ana leaves the gate
18 h 26 apart on the timetable, overnight
AA 2212 leaves 18 h 26 after UA 5192 arrives on the timetable: more than half a day, so not a connection we count.