Supplier Portal - 1 supplier user with access to 2 different suppliers

Summary:

We have a requirement where single supplier user (user account based on email address) needs to access supplier portal for 2 different suppliers who are not defined as parent-child on the supplier profile.

Is there a way to achieve the requirement?

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

23D

Code Snippet (add any code snippets that support your topic, if applicable):