(1) With the transfers, I was assuming 40 minutes on the transfer to the HSR train and 20 minutes on the transfer from the HSR train as a matter of travel budgeting. The HSR train is, presumably, going to be reserved; I know the frequencies are supposed to get up into the once-every-ten-minutes range at peak hours...but I don't put full faith in 100% OTP (things go wrong) and last minute rebooking has a habit of getting expensive, so my figuring is a 30-minute pad there, and 20 minutes on the other end for connection timing outside of the peak direction.1) Where are you getting all these transfers from? By the time the Authority hits San Jose, Caltrain will be electrified, so it'll be a straight shot in to downtown San Francisco, just not as many frequencies doing so until full buildout.
2) IOS is Merced to San Fernando Valley (likely LAUS actually, lots of pushing for that and it's a cheap extension) in 2022 which gets you a five hour one or two seat ride LA-SF (depends on whether transfer at Merced or diesel locomotive hauls from there).
3) 2026 is one seat three hour ride LA-SF
4) LA-SF via the CV by diesel is 11 hours, not 8. It's five hours over Tehachapi and fat chance of getting an agreement to use that.
(1b) One point you did get me on was Caltrain (I didn't know if electrification was anywhere substantial in process...it's been talked about for so long I'd stopped believing it was anywhere on the horizon), though even there...would there be the capacity to run CAHSR's trains up the corridor? Caltrain is planning on running 6x hourly trains, but there's no mention made of capacity for another 3-6x trains per hour in each direction.
(2) I know the IOS is Merced-San Fernando Valley (and I know there's been pushing for LA-Burbank to happen sooner rather than later, though on that I'll believe it when the funds get committed).
(3) This is another place where I don't quite believe the timetable. Also, it's 2028 that has that in the current reports, not 2026.