How to watch Recordings from one Duo to another?

I'm completley useless at networking etc, never really done it but what I'm after is, I have a duo clone (Blackhole 1.7.3) in living room and Duo clone in conservatory (OpenVix 3.058?) and I want to watch a recording thats on the living room box on the other box..

Can I stream the recording to my other box? If so how???

Cheers for any help!