(a) The indeterminate term of commitment provided for in Section 6604 shall commence on the date upon which the court issues the initial order of commitment pursuant to that section.
(b) The person shall be evaluated by two practicing psychologists or psychiatrists, or by one practicing psychologist and one practicing psychiatrist, designated by the State Department of State Hospitals. The provisions of subdivisions (c) to (i), inclusive, of Section 6601 shall apply to evaluations performed for purposes of extended commitments. The rights, requirements, and procedures set forth in Section 6603 shall apply to all commitment proceedings.