It sees the DAC but seems to be treating it as another Nucleus rather than a DAC. The Nucleus is named Zeke and the DAC is names Zebra.
With my previous DAC the icon was a DAC icon with the DAC name and sat next to the Nucleus icon. Here I just have a single icon showing
I am looking over your account diagnostics and I can see that the zeke zone is your Nucleus HDMI and the zebra is the Luxman. You had another Windows 11 PC that was also called ZEKE, perhaps that is what is causing the confusion? You can see the name of the Nucleus in Roon Settings → Setup → Roon Server name.
Thanks all for the guidance. It seems that my previous DAC was displayed in the footer but my new DAC was not. If I now select on the lone icon in the footer and set it to zebra all is well so hence the confusion so please close this query.