Like many others, I first look at Funnels at at systeme.io.
The URL path, however, confused me when I found the Share Link.
I contacted the Support and they clarify as follows:
URL path is a link to your website that you can provide to your customers/clients. So anyone who has an internet connection can click on it and see the page's content, purchase your products, etc.
The share link is used for importing the content from one systeme.io account to another. It means that if you share that link with some users of our platform, once they click it, the funnel will be recreated on their accounts.
Great! That is helpful.