Oculus SDK symbols not found in Visual Studio but Unity is able to compile the application

Hi,

I'm trying to understand how Unity generates Visual Studio projects. My target platform is the Oculus Quest and I've followed the Oculus instructions for setting up the development environment. I'm able to deploy to the Quest successfully.

But from within Visual Studio, all Oculus SDK symbols (e.g., OVRInput) appear missing and therefore I'm unable to use auto-complete. I also noticed that I am unable to build the project from within Visual Studio.

Any help understanding this would be much appreciated!