UA 1853 then AA 134 at LAX
Cleveland → Los Angeles → London
Timetable, Los Angeles time
20:27UA 1853 from Cleveland at the gate
17:00AA 134 to London leaves the gate
20 h 33 apart on the timetable, overnight
AA 134 leaves 20 h 33 after UA 1853 arrives on the timetable: more than half a day, so not a connection we count.