DL 686 then DL 1426 at Atlanta
Savannah → Atlanta → Richmond
Timetable, Atlanta time
08:50DL 686 from Savannah at the gate
20:59DL 1426 to Richmond leaves the gate
12 h 09 apart on the timetable
DL 1426 leaves 12 h 09 after DL 686 arrives on the timetable: more than half a day, so not a connection we count.