AA 2896 then DL 2057 at DFW
Chicago O'Hare → Dallas-Fort Worth → Boston
Timetable, Dallas-Fort Worth time
00:43AA 2896 from Chicago O'Hare at the gate
17:30DL 2057 to Boston leaves the gate
16 h 47 apart on the timetable
DL 2057 leaves 16 h 47 after AA 2896 arrives on the timetable: more than half a day, so not a connection we count.