While there is no direct advantage to you. What they have in place is a standardized installation which means phone CSRs and local repair techs will know how to debug (if only following a script to do so).
Technically the HR34 doesn't need the extra DECA for home LAN conversion it's Ethernet port has all the magic goodies to act as the CCK and passes multiple streams concurrently.
So do you need the extra pieces? Not at all, but come support time . . .
In your case having a wired home LAN locally available is a rarity and the install is their "one size fits all" set up. Unless it isn't working, I'd think hard about changing it to technically what is optimal (from a computer/network geek perspective) in favor of having their ability to help troubleshoot problems.
Don "I run both DECA and home LAN services with no issues but I am my own installer/support team as result" Bolton
My house is wired with cat 5 from my office to my bedroom and living room. I only have one TV, which is in my living room.
Yesterday I had a HR34 installed, upgrading from an HR20, and the installer also installed a SWM and a DECA. If I am only using one television and and I have a direct Ethernet connection that can be plugged into the HR 34 is there any advantage to leaving it hooked up to the DECA? I can't think of any. My HR20 was hooked up directly to my network without any problems.
Any help would be appreciated.