Retirement of RBAC Application Impersonation in Exchange Online

Hi The_Exchange_Team _cparker 

We use team linking in our application. In this process,an administrator creates a service account, and users within the organization are added to a specific group associated with this account. The administrator of this service account then signs into our application, and through this account, we are able to access the mailbox data of all users who are part of the group.
After reviewing various documentation, I understand that application-type permissions are generally required for team linking scenarios. However, our application is configured to use only delegated permissions, and it is functioning correctly - we are successfully fetching the data of all users within the group.
Given this situation, could you please confirm whether it is accurate to say that team linking can also work with just delegated permissions?

Here is our app permissions