Microsoft Purview SharePoint online Behavior in mix license environment

suppose the tenant has mix and match of license like basic and E5. Share Point Online folder has been configured and labels applied to the folder using Microsoft Purview with E5 license.

the files contained in folder should only be accessed by specific department group (say group A) and cannot be downloaded by other groups.

what will be the behavior for a user having basic license and part of group A and trying to access / download a file from the protected folder.

What will be the behavior of the same user with basic license who is moved to group B.