That won’t work!
However, if the antenna cable is running from the BV7 with the modulated signals/rf from these 2 sources - just like when it is running to the BV10, you could use the analog tuner in the V1 to make two presets for just these frequenzies.
This way, however you will only be able to see, what is activated on the BV7 - no controllig from the V1!
But, why not just get a second Sky-box or a smartcard to open up these channels.....if your service provider allows for that.
(By the way, do you with SKY mean a satelite receiver or?)
Maybe there is an app from your (SKY)provider for the ATV - which could be connected to the V1.
And are you really in need of wanting to watch a DVD on the V1, you must ask yourself?
If yes and once in a while - it is pretty easy (and cheap) to buy and connect an extra player to the V1.
Most people nowadays don’t have a player for physical media, since a lot of services provide video content via e.g. an ATV-box.
The benefit of NL lies somewhere else.
It is a multiroom and multisource protocol.
With ML you can only distribute sound from a master to a slave.
NL works both ways - meaning (if you have the converter), you could use the built-in internetradio of the V1 through your BV7/BS9000, or the sound from your BS9000/CD’s through the V1......
Since you won’t be able to do, what you initially asked for, you must ask yourself: how do I want to use the V1?
Hope this helps a bit.
MM