I have a Synology DS211j and plugged in a PCTV Systems dvb-t2 290e USB stick into the front USB port. After experimenting with DVBLink and Videostation on the Synology box I ended up using TVHeadEnd to access SD and HD channels. Recording and playback using the DS211j box through DLNA to the BV11 works like a dream on my network provided you don't select mkv as a wrapper for the HD stream. Not that I understand the details but its something to do with how a HD stream is encoded relative to a SD stream. I found Videostation a bit buggy and spent too much time trying to configure DVBLink. I also used a powered USB hub just in case there was a problem with power. I suspect performance will depend on the network configuration, router, what else is running on the NAS etc.

It's not really off topic because this is how I found out about my DLNA issue. I was recording a program and having it save in a directory associated with the DLNA server in the hope that once the recording had finished it would magically appear in HomeMedia on the BV11. All works super until the last step!

Hope that helps.