This subchapter supplements Subchapters A and B of this chapter and Chapter 1368 and the department rules adopted under those statutes. It is the intent of the legislature that Subchapter A or B of this chapter or Chapter 1368 or a department rule adopted under those statutes controls in any circumstance in which that other law requires:
(1) a benefit that is not required by this subchapter; or
(2) a more extensive benefit than is required by this subchapter.