UA 353 then CV 251 at O'Hare
Los Angeles → Chicago → Dallas-Fort Worth
Timetable, Chicago time
05:20UA 353 from Los Angeles at the gate
22:10CV 251 to Dallas-Fort Worth leaves the gate
16 h 50 apart on the timetable
CV 251 leaves 16 h 50 after UA 353 arrives on the timetable: more than half a day, so not a connection we count.