ND5 XS2/NDX RC5 Spotify connect in-app volume control

Hi, wondering if anyone has a Naim streamer linked to an SN2 or XS2 amp via RC5 and is able to control the volume of the amp from within the Spotify app? I know you can do this within the Naim app itself. I ask as having got used to using the Naim Atom spotify and Chromecast audio this way, my next move is likley going to be to add an ND5 XS2 and SN2/XS2 and I'd like to keep this feature if possible.

Guessing too soon for ND5 XX2 users to add in any thoughts but likewise would be interesting to know if this also is possible within the Chromecast app.

Ps I know a simple answer to this would be to buy a Nova instead of  N5 Xs2 and Sn2/Xs 2.

Thanks,

Andy