DL 597 then DL 9970 at Atlanta
Cancún → Atlanta → Los Angeles
Timetable, Atlanta time
17:39DL 597 from Cancún at the gate
17:01DL 9970 to Los Angeles leaves the gate
23 h 22 apart on the timetable, overnight
DL 9970 leaves 23 h 22 after DL 597 arrives on the timetable: more than half a day, so not a connection we count.