Hyper-V VMs on private network

Hi,

I have 2 Hyper-V host on the same network subnet. On each server there is one VM (per server) with assigned Private network. Is it possible to setup network environment without changing anything for VM where these two VMs can communicate?
I can change Hyper-V host, add NICs, whatever, but VMs must be on private network.

Thnx.