There are formal partnerships between rail providers and airlines around the world, where your train ride is treated like a leg of your flight. You have a guaranteed connection, and often your bag is transferred from the train to your airplane.
Why would you connect the two airports if the point is supposed to be that you don’t have to use the airports?
What? That sounded pretty hinky to me so I looked at the wiki page. The only airport included in Phase 1 is Burbank. Phase 2 includes proposed station at San Diego and Ontario airports. Soooo no, there's no direct service to any Bay Area airport or LAX. Being able to stop right in the heart of the destination city is one of the key advantages of rail.https://en.wikipedia.org/wiki/California_High-Speed_Rail#Pha...
There are, however, stations in downtown San Francisco, San Jose, and Los Angeles.
Edit: And just to throw a bone to the anti-HSR folks: the downtown SF situation is still a clusterfuck the net result of which is a billion dollar bus station and a poorly connected (4th/King) rail station. There's a ton of related stuff that needs to be fixed, but needs to be fixed is still better than never going to happen.
BART's kind of remedied the situation, but for a while their operational costs were so high that there was no direct SFO-Millbrae service during the day. You had to backtrack all the way to San Bruno. By 2019 there was a "shuttle", and now the red (but not yellow!) line serves SFO and Millbrae.
In addition the Caltrain/BART connection at Millbrae requires a lot of walking. It's tedious and poorly designed.
The BART connection does suck, but I dont know how it look 2 hours to get to the Caltrain Station.
This seems like first-order analysis: people fly between SFO and LA so let's build a railway between them.
Second-order analysis: people actually want to go from downtown SF to downtown LA, so build a railway between those places directly.
So it could potentially replace a lot of short-haul connecting flights.
Pulling up a map of Australia, this is the equivalent of setting out to improve transport from Canberra to Melbourne, and the first sections to be built will connect Leeton to Echuca.