DL 2709 then DL 2590 at Atlanta
Houston → Atlanta → Baltimore
Timetable, Atlanta time
11:04DL 2709 from Houston at the gate
23:09DL 2590 to Baltimore leaves the gate
12 h 05 apart on the timetable
DL 2590 leaves 12 h 05 after DL 2709 arrives on the timetable: more than half a day, so not a connection we count.