UA 1853 then AS 1637 at LAX
Cleveland → Los Angeles → Guatemala City
Timetable, Los Angeles time
20:27UA 1853 from Cleveland at the gate
17:17AS 1637 to Guatemala City leaves the gate
20 h 50 apart on the timetable, overnight
AS 1637 leaves 20 h 50 after UA 1853 arrives on the timetable: more than half a day, so not a connection we count.