Nothing in ss. 186.501186.507, 186.513, and this section is intended to repeal or limit the provisions of chapter 163; however, the local general-purpose governments serving as voting members of the governing body of a regional planning council created pursuant to ss. 186.501186.507, 186.513, and this section are not authorized to create a regional planning council pursuant to chapter 163 unless an agency, other than a regional planning council created pursuant to ss. 186.501186.507, 186.513, and this section, is designated to exercise the powers and duties in any one or more of ss. 163.3164 and 380.031(15); in which case, such a regional planning council is also without authority to exercise the powers and duties in s. 163.3164 or s. 380.031(15).