DL 2917 then CV 251 at O'Hare
New York LaGuardia → Chicago → Dallas-Fort Worth
Timetable, Chicago time
09:06DL 2917 from New York LaGuardia at the gate
03:00CV 251 to Dallas-Fort Worth leaves the gate
17 h 54 apart on the timetable, overnight
CV 251 leaves 17 h 54 after DL 2917 arrives on the timetable: more than half a day, so not a connection we count.