For obvious reasons you can't send analogue audio from one PC to another using anything other than an analogue audio wire - but I think this was just a slip of words.
In your scenario I would probably not use Dante, because it needs a grandmaster clock, which ideally should be a hardware Dante device. You *could* use Dante Via, which can act as a grandmaster clock, but that would cost you a total of ~100 EUR in licenses, and unless you enroll more devices you won't make use of the flexibility.
If you use Windows, give VBAN Audio a go:
https://vb-audio.com/Voicemeeter/vban.htm
You use the Voicemeeter virtual audio mixer als a source, and the VBAN receptor or another Voicemeeter mixer as a sink.
And final question: does it need to be windows? Jack on linux is such a great solution for low latency network wide audio, with all the benefits of a stable ecosystem. I still wonder why the whole broadcast businesses all stick with Windows for mission critical systems, and fiddle with settings to avoid automatic upgrades, restarts, feature changes and all that silliness of Windows.