AA 5063 then DL 2987 at Atlanta
Charlotte → Atlanta → Boston
Timetable, Atlanta time
08:42AA 5063 from Charlotte at the gate
20:50DL 2987 to Boston leaves the gate
12 h 08 apart on the timetable
DL 2987 leaves 12 h 08 after AA 5063 arrives on the timetable: more than half a day, so not a connection we count.