So you are running the steam vr beta version?
I’m a little confused. If you are running the oculus quest 2 version sold here there is no link used it’s run natively. If you are running the steam Vr version then not sure how the tool is used for steam VR games. I do know that a lot of people are reporting issues using link since oculus quest update v25, and there are issues with v26 too
Vader immortal of course is cross buy so buying the quest or rift version on the oculus store and you get the other for free . but that doesn’t apply to steam vr games so If you are not running the steam VR beta then you don’t need to be connected to the pc to play this game only to install it via sidequest. Once that is done you just play it from the “unknown sources” section