I'm guessing at what you mean.....
Can I use a box in room one using sat one, an use another in room 2 by chasing a able from sat 2?
If that's the question, then try box 1 in room 1 using both sat 1 and sat 2, if box works from both, then it would suggest the signal is live on bot
IF you're asking something different, try give us more detail please.