AND means he was convicted of BOTH which is why he’s in for 15 to life. The quote was from the government website for the area he ways convicted not some misinformed 3rd party.
https://www.keglawyers.com/vehicular-manslaughter-penal-code...
PC 192(c) vehicular manslaughter filing, the punishment if convicted can include:
two, four, or six years in the California state prison and that’s it it caps at 6 years not 15 to life.
If you don’t believe them here’s the actual statute: https://leginfo.legislature.ca.gov/faces/codes_displaySectio....