F9 2146 then UA 5940 at O'Hare
Las Vegas → Chicago → Tucson
Timetable, Chicago time
05:13F9 2146 from Las Vegas at the gate
19:54UA 5940 to Tucson leaves the gate
14 h 41 apart on the timetable
UA 5940 leaves 14 h 41 after F9 2146 arrives on the timetable: more than half a day, so not a connection we count.