B6 1097 then DL 1175 at Atlanta
Boston → Atlanta → Richmond
Timetable, Atlanta time
11:04B6 1097 from Boston at the gate
23:05DL 1175 to Richmond leaves the gate
12 h 01 apart on the timetable
DL 1175 leaves 12 h 01 after B6 1097 arrives on the timetable: more than half a day, so not a connection we count.