Not sure if it will help, You can have two networks running along side each other as long as you have the key items. 2 x network card/connection for each PC you would like to talk to both Have a 2 network switch (this will manage the network you want.) This is something we do on vessel to keep the network clear of the data network from the different sensors You will need another sever for this to keep performance. Also have to run separate network cables to each computer you want to to have access to the other network. Trying to access another network through one computer can be done but it can also slow down the exciting network.