That’s what I’m thinking too Salivi. The ‘visual’ part of the SFO approaches is really for traffic identification/separation purposes due narrow runway spacing (very well explained by earlier posters), but the lateral & vertical parts of the approach are LNAV/VNAV procedures extracted from the database. Flown just like an RNAV approach with terrain/airspace floor clearance assured. Even easier with ‘FLS’ on the 350. I think the 1st NorCal controller tried to help the crew out there. LH have been flying there a long time, so I’d be surprised if this wasn’t elaborated somewhere in their company pages.