streaming between 2 Roamios

I am 72 and not up on this new stuff so please bear with me...I have an issue that I am sure has a work around..Tivo TS has gotten me half way there but rather than spend another hour on line with them I think I can get a quicker answer here and one I can understand...



I have 2 Roamios separated by a wall...One is connected with Ethernet ( TS suggested that) and the other wireless hooked to a gigabyte router/modem..



Until I connected Ethernet to the one I could not view either one on the other...once I hooked up the Ethernet I was able to watch the one in the other room ( it is wireless)... and keeps giving me a V69 error code..TS tells me to hook up MoCa...but if I wanted to run wires I would just hook both up on the router Ethernet...



Is there any work around with out having to run more cable ??



** did not go the Tivo/mini route as we both wanted to control the our own unit...



Any help will be appreciated ..



Thanks