> Sundheds data nettet

Sund-hed is "sound-ness" (or even "sound-hood"), i.e. health.

> The health data network

(Source: I speak Danish as a second language. I used to think Georgian was the language with the most consecutive consonants but then I learned how little the Danes respect their vowels so now I know better)

If the two networks are entirely separate, and they absolutely must be, then there's no reason for addressing concerns of one to influence the other one iota. (Except that certain OSes might have baked-in assumptions about things like the 127/8 network, so you'd have to work around those.)