Well your post prompted me to look into it further.. EBU 128 S2 (supplement 2) is specifically targeted at streaming media provides and players, and the recommendation for broadcasters and cloud stream providers following EBU R128 (and Tidal is mentioned as an example) that use their own interfaces is that loudness is applied on their clients either by default or on demand rather than at source and be controlled by using meta data.
So in this example using Roon to optionally apply loudness normalisation if the user requires for content fits this model. This is also the approach used by Tidal’s own player. With Naim natively there is no option to use this normalisation meta data.
Or if no loudness normalisation is required, or the player (device) can’t process the loudness normalisation meta data, the source is not manipulated and the meta data ignored
