They will tell you it takes three hours but it will be less. The primary doctor will do a preliminary exam. They will takes vitals and ask what r your concerns. They will also schedule you for anything you may need. If you have problem with hearing, they will have audiology contact you.
The psychiatrist will ask you some screening questions and provide you with another appointment about three months out.They will also prescribe you anything you may need.
The social worker will ask you post deployment and employment questions. If you are working it should not be long.
The case worker will just go over all available help and services for you.