krazysage on "Subdomains from two unique URLs"

I installed WP Multisite and I have my site1.com and blog.site1.com urls.

What I want is this:

site1.com
blog.site1.com --(tued into)--> site2.com
blog1.site2.com
blog2.site2.com

In descriptive terms, I want two unique URLs for two unique websites on my WP Multisite Network. Then, I want 2 different blog URLs stemming from the second unique URL on my Multisite Network.

That's the most specific and simple I can make it. Can someone help me out here?
I use GoDaddy hosting.

Hi ,

You need to use a domain mapping plugin and align the required domain to the sub domain. Can be done , check the plugin repo and you should be good to go.