They are completely separate websites. :)
Btw, If you do only step 2 and step 4, you can get a fully working DTube clone (without scot). DTube is a static app and easy to host anywhere.
You can even download the https://github.com/dtube/production and just open the index.html from your pc... it should work. Maybe you'll need to click the logo to get the homepage to display but then everything should work.
hmmm, now you have me thinking. problem is I have absolutely zero technical skills. Might need to find a fellow aussie that could set up our own dtube for here. If a content creator posted on d.tube and tagged a seperate sight (hypothetically aus.tube), would the post appear on both? Sorry if its a dumb question, I am trying to get my head around stuff I have no skills in.