UA 353 then AA 9908 at O'Hare
Los Angeles → Chicago → Salt Lake City
Timetable, Chicago time
05:20UA 353 from Los Angeles at the gate
18:15AA 9908 to Salt Lake City leaves the gate
12 h 55 apart on the timetable
AA 9908 leaves 12 h 55 after UA 353 arrives on the timetable: more than half a day, so not a connection we count.