Yes, this link works.
I haven't tried yet, but it is possible. The installation manual is clear about that.
I think you should start at the base by using the composite video instead of RGB VGA video and connect to one of the scarts and name it as "VAux".
The software of the beomedia should be changed to : "instruction: VAux" to control the beomedia.
Then it should act like any other videosource like DVD or V8000 in a link setup.
At the moment my beomedia reponds to PC instructions and in the software setup in the beomedia the option to change this is grayed out.
So I can't change it from PC to VAux. And therefor my MX7000 in the bedroom also can't activate the beomedia.
My BV6-22 in the kitchen knows the PC instruction, but starts to look at it's DVI socket.