UA 345 then CM 409 at San Francisco
Las Vegas → San Francisco → Tocumen
Timetable, San Francisco time
19:58UA 345 from Las Vegas at the gatealso CM 1891, UA 2721, NZ 9241
19:36CM 409 to Tocumen leaves the gate
23 h 38 apart on the timetable, overnight
CM 409 leaves 23 h 38 after UA 345 arrives on the timetable: more than half a day, so not a connection we count.