UA 1853 then AA 4981 at LAX
Cleveland → Los Angeles → Tucson
Timetable, Los Angeles time
20:27UA 1853 from Cleveland at the gate
16:49AA 4981 to Tucson leaves the gate
20 h 22 apart on the timetable, overnight
AA 4981 leaves 20 h 22 after UA 1853 arrives on the timetable: more than half a day, so not a connection we count.