I was on a 4 hour late SWC last August. Per the announcements prior to arrival at LAUS, some passengers were put on the Next Pacific Surfliner as far north as SLO. For those going further, Salinas, etc. bus I believe from Santa Barbara or SLO. For those going even further, bus to Bakersfield then a San Joaquin train to Sacramento to catch the Coast Starlight. The only way you will get an answer better than "probably" is to talk to someone who was actually there and making a connection.