DL 957 then DL 2398 at Atlanta
Denver → Atlanta → Baltimore
Timetable, Atlanta time
19:14DL 957 from Denver at the gate
15:16DL 2398 to Baltimore leaves the gate
20 h 02 apart on the timetable, overnight
DL 2398 leaves 20 h 02 after DL 957 arrives on the timetable: more than half a day, so not a connection we count.