F9 1596 then DL 329 at Atlanta
Chicago O'Hare → Atlanta → Santa Ana
Timetable, Atlanta time
13:32F9 1596 from Chicago O'Hare at the gate
10:50DL 329 to Santa Ana leaves the gate
21 h 18 apart on the timetable, overnight
DL 329 leaves 21 h 18 after F9 1596 arrives on the timetable: more than half a day, so not a connection we count.