What is sussession primary and secondary mean?

In the context of network security:

Primary Sussession: Refers to the initial or primary authentication session established between a client (such as a user) and a server or service. It involves verifying the user's credentials, such as username and password, and establishing a secure connection. The primary session serves as the basis for subsequent authentications and authorizations.

Secondary Sussession: This term is not typically used in the context of network security. The term "session" is often used in networking and security discussions, but the concept of "primary" and "secondary" sessions is not commonly defined.