Forum Discussion
How MS-Teams/Office-365-Group Owners got Full control permissions on the underlying sharepoint site
Using the office 365 admin center and the office 365 admin username i created a new MS Teams as follow, and i name it "TestTeam123":- now this have created a new Office 365 group + sharepoi...
To answer your first question, TestTeam123 Owners you see in the Site Collection Administrators seems to be the Office 365 Owners role group and not the site's SharePoint security owners group.
The reason I think this is because if you open your browser's dev tools and inspect the HTML for that element (the group as you see it when viewing the Site Collection Admins), you will see that it is a domain-type federated group and not a SharePoint security group.