Hdmi causes crosstalk between external preamp sources

Here is my system 
https://systems.audiogon.com/systems/7722

i have a very unique setup and an even more unique problem. 
First let me outline the connections. All components power connected to synergistic powercell 

preamp is t+a p 3000 hv

Av processor is Marantz av8802a. Video sources connected to Marantz via fibre hdmi are appletv and wolf audio luna media server.  
Marantz is connected via fibre hdmi to lg oled tv. 
Marantz preouts are as follows:
1)front left and right via xlr to t+a preamps surround bypass input 
2)center and tear surround via rca to McIntosh 7106 multi channel amp

T+a preamp connected via xlr to sanders Magtech amp 

so here is the problem. I can hear other sources that are playing through the surround channels even when the t+a is on a different input source. 

For example i can hear the hdd in the media server working in the center and surround channels even  when im listening to my dac. 
Take the hdmi out and its gone. 
Now if i use a cheater plug on the wolf server it masks the problem but id prefer to get to the bottom of it all and truly solve the problem. 
I will say that the lg, the Marantz, and the appletv are two prong devices. And the wolf has a separate power supply with an iec that could be swapped for a two prong. 
Im wondering if i should connect all 2 prong devices to a power strip on a separate outlet. 
Any ideas?