UA 356 then DL 996 at Atlanta
Chicago O'Hare → Atlanta → Los Angeles
Timetable, Atlanta time
17:38UA 356 from Chicago O'Hare at the gate
07:00DL 996 to Los Angeles leaves the gate
13 h 22 apart on the timetable, overnight
DL 996 leaves 13 h 22 after UA 356 arrives on the timetable: more than half a day, so not a connection we count.