The system is currently allowing inbox access restriction, but it is not possible to split the restriction per type/team. E.g. Super Admins should be allowed to enable read-only access to other departments for specific channels, e.g. chats. For example, in my case I need full access for Support agents (read and edit tickets/chats), read only access for Sales for chats. At the moment this is not possible, which means restricted access is enforced, and that limits the account managers on having a better understanding of the client (because they have no way to view the chats).
This is a very basic concept - permissions are already configured, we just need to distinguish read-only from full access, by team allocation and communication method.