DL 1462 then AM 979 at Atlanta
Richmond → Atlanta → Monterrey
Timetable, Atlanta time
12:56DL 1462 from Richmond at the gate
12:30AM 979 to Monterrey leaves the gate
23 h 34 apart on the timetable, overnight
AM 979 leaves 23 h 34 after DL 1462 arrives on the timetable: more than half a day, so not a connection we count.