Lucky, my purpose goal is reached.

1 TV (Wäschebügel- and exercise bike-entertainer at times) is up for the Sky receiver down, I had to pull a SAT-wye to the top socket a second cable. Meant that if the TV was on top, came down to nothing more, because of the dominant on the LNB (6-disc multi-switch at the bowl)

Master-slave unit switches as expected, luckily. Now I have the bottom of the Sky receiver both cables (one directly from the bowl and one is branched over the upper rooms) with dominant circuit. The above shows, at least now about half of the available channels, depending on what is connected below.
Preceded only either or, now goes throughout and half. As far as the plan that worked.