DL 5680 then AA 4539 at Boston
Pittsburgh → Boston → Columbus (Ohio)
Timetable, Boston time
20:16DL 5680 from Pittsburgh at the gate
19:36AA 4539 to Columbus (Ohio) leaves the gate
23 h 20 apart on the timetable, overnight
AA 4539 leaves 23 h 20 after DL 5680 arrives on the timetable: more than half a day, so not a connection we count.