Originally Posted by
javabytes
The O in ORC stands for Original, so that would be SJC-SLC. The alternative is your actually flown segment SFO-SLC.
No, it is not an IDB unless you present yourself for boarding and you are turned away because the flight is oversold.
In this case, SFO - SLC would be preferable to SJC - SLC. It's about 14 more miles.