DL 2391 then DL 8844 at Atlanta
Boston → Atlanta → Detroit
Timetable, Atlanta time
16:35DL 2391 from Boston at the gate
09:28DL 8844 to Detroit leaves the gate
16 h 53 apart on the timetable, overnight
DL 8844 leaves 16 h 53 after DL 2391 arrives on the timetable: more than half a day, so not a connection we count.