UA 2102 then CV 251 at O'Hare
Las Vegas → Chicago → Dallas-Fort Worth
Timetable, Chicago time
05:30UA 2102 from Las Vegas at the gate
22:10CV 251 to Dallas-Fort Worth leaves the gate
16 h 40 apart on the timetable
CV 251 leaves 16 h 40 after UA 2102 arrives on the timetable: more than half a day, so not a connection we count.