DL 2804 then FX 1388 at O'Hare
Boston → Chicago → Memphis
Timetable, Chicago time
22:36DL 2804 from Boston at the gate
22:00FX 1388 to Memphis leaves the gate
23 h 24 apart on the timetable, overnight
FX 1388 leaves 23 h 24 after DL 2804 arrives on the timetable: more than half a day, so not a connection we count.