DL 1421 then UA 406 at San Francisco
Los Angeles → San Francisco → Las Vegas
Timetable, San Francisco time
08:58DL 1421 from Los Angeles at the gatealso LY 4095, VS 4109, KE 7217, MU 8848
21:10UA 406 to Las Vegas leaves the gatealso AC 4025, VA 8562, LH 8940, NZ 9229
12 h 12 apart on the timetable
UA 406 leaves 12 h 12 after DL 1421 arrives on the timetable: more than half a day, so not a connection we count.