WN 987 then DL 588 at Atlanta
Baltimore → Atlanta → Mexico City
Timetable, Atlanta time
10:20WN 987 from Baltimore at the gate
10:06DL 588 to Mexico City leaves the gate
23 h 46 apart on the timetable, overnight
DL 588 leaves 23 h 46 after WN 987 arrives on the timetable: more than half a day, so not a connection we count.