Here is how I understood it from reading (and as there is limited information on the internet and I do not have firsthand experience fighting dithering, my understanding is limited).
Temporal dithering is a general name for color creation through flickering pixels.
To increase the number of colors that can be displayed on the screen, screen manufacturers use FRC, which is a form of temporal dithering. The number of colors is advertised value, is a part of screen specifications and doesn't change. So FRC, if used, is tied to the screen itself. Now comes the tricky part, I do not know what is technically responsible for FRC (if it is created by electronics within the screen or by drivers/GPU). I do not know if it can be turned off somehow. But anyway FRC should come and go with the screen. If you replace 6 bit + FRC screen with 8 bit screen, there should be no FRC with the same computer and same settings.
But there still could be temporal dithering, created with different intentions, by GPU manufacturers or OS developers. It can be used to make the image better or make the user experience more even within different screens and hardware. It will not disappear with the change of the screen.
I do not know how temporal dithering in form of FRC and other kinds of temporal dithering interact with each other, if they are shown together or not.