Hi beojeff
Im not sure if i have asked this before, at this moment there is a beosystem 3 connected to bvis 4-65, and projector screen with blinds and lights, all working well, purchased beosystem 4, and will get a used atlona switch, do i route hdmi of bsys 4 into atlona then hdmi out of that in lnto bvis 4?
That's correct. Beware, though, that you have to get the specific B&O version of the Atlona switch. I can confirm that the regular switch will not work, and I had to send it to Atlona to have it replaced. The B&O version is loaded with firmware that gets detected via HDMI by the BS4. When the BS4 detects the switch, you then get a new menu on the BS4 that lets you setup two separate video ouptus -- one for the projector and another for the TV screen. You also then get the ability to use a PUC cable to control the splitter and also another to control the projector.
Some on here have told me that Beocare advised that the specific B&O version of the splitter is not necessary, but I know from first-hand experience that this is not true. Atlona, Beocare, and my dealer all confirmed this. Fortunately, Atlona provides amazing support and replaced mine without charge.