DL 5706 then AA 5798 at Philadelphia
Boston → Philadelphia → Columbia
Timetable, Philadelphia time
15:51DL 5706 from Boston at the gate
15:35AA 5798 to Columbia leaves the gate
23 h 44 apart on the timetable, overnight
AA 5798 leaves 23 h 44 after DL 5706 arrives on the timetable: more than half a day, so not a connection we count.