UA 368 then CV 251 at O'Hare
San Francisco → Chicago → Dallas-Fort Worth
Timetable, Chicago time
05:49UA 368 from San Francisco at the gate
22:10CV 251 to Dallas-Fort Worth leaves the gate
16 h 21 apart on the timetable
CV 251 leaves 16 h 21 after UA 368 arrives on the timetable: more than half a day, so not a connection we count.