B6 382 then DL 5597 at Boston
Richmond → Boston → Jacksonville
Timetable, Boston time
08:56B6 382 from Richmond at the gate
08:45DL 5597 to Jacksonville leaves the gate
23 h 49 apart on the timetable, overnight
DL 5597 leaves 23 h 49 after B6 382 arrives on the timetable: more than half a day, so not a connection we count.