Well if DIRECTV installs MRV/DECA it will likely go something like this then: SWiM LNB ("green label") ----> four way "green label" splitter ---> one coax output to the HR34; another coax run from splitter to the HR22; And another possible run from splitter to a wired CCK or maybe a 2-way "green label" splitter on the run to the HR34 to supply the CCK (fourth output of the splitter is terminated). In either case though the ethernet output of the CCK connects to your router for home network/internet connectivity for both receivers. If ethernet access to the router is close to the HR34 then you don't really need the CCK as the HR34 may serve as it. But it is DIRECTV's policy to install it anyhow. The HR34 and HR22 would then be able to "see" each other for MRV over the coax network by transitioning via DECA signaling through the SWiM splitter in this case and/or use the CCK for the home network/internet connection if necessary.