Your BeoSound stage manages remote commands only via BT, HDMI or Ethernet and your 8002 needs a wired datalink signal coming from a Master system. From my knowledge your BeoSound does not have a source Master system interface nor do those ML and MCL components. The Master system is what decodes the output of your Beoremote One IR commands into the datalink control signals the 8002 receives via its DIN connector.
The other issue you have is that you need to get the DL signal into a Master system component which do not pass through your phono preamp as they have their own DIN signal pins.