You will have only one Connect account. If two departments are participating in Connect, one email account contents will be migrated, and one will not. The departmental address can be set up by the CDA's. For example, if you have an ERI and an MSI account, one will be migrated to your Connect account, email@example.com. You will have to manually migrate any other email data. If you coordinate with your CDAs, the firstname.lastname@example.org and email@example.com would both be able to deliver mail to firstname.lastname@example.org.