@Pacomartin
The DVR's are connected by Ethernet not MOCA. The bedroom is not wired for cable instead I use an OTA antenna on the TiVo Premiere for channels. For the network access I use a Cisco Linksys WES610N Bridge Media Connector in the bedroom to wirelessly connect to my linksys router in the Living room. The TiVo Premiere and Roku in the bedroom both connect to the bridge using Ethernet wire.
Works perfectly with no buffering except for the RCN Q hanging sometimes when accessing the Premiere.
The bedroom Premiere is a 2 tuner 2 TB and the RCN Q is a 4 tuner 500 GB which is why I tend to access the bedroom box from my Living room as it has more storage.
Both TiVo's see each other and both are wired Ethernet. I know the easy think is to point at the Bridge but the TiVo should not hang regardless and my Roku has streamed hours and hours of Netflix w/o problems. Thx!