We are working on getting the case and case feeds (email, case comments and files)  from our partner's salesforce org to our salesforce org. We only need view permissions for those cases and case feeds. I explored Salesforce to Salesforce, but it doesn't seem meeting the requirements because of the limitations. First limitation is that the new case is created in the subscriber org with a new case number, second limitation is that the feeds are not able to share.  Can you advise what tool/approach would be the better approach to achieve our needs?