UA 5474 then CV 251 at O'Hare
Greenville-Spartanburg → Chicago → Dallas-Fort Worth
Timetable, Chicago time
07:36UA 5474 from Greenville-Spartanburg at the gate
03:00CV 251 to Dallas-Fort Worth leaves the gate
19 h 24 apart on the timetable, overnight
CV 251 leaves 19 h 24 after UA 5474 arrives on the timetable: more than half a day, so not a connection we count.