Further confirmed by the latest item on this subject in the top level government news site on 2023-08-28: https://www.gob.cl/noticias/cambio-hora-2023-fecha-huso-horario-verano-modificar-relojes-chile/ . It's refreshing that they stated it two different ways with precise language. :)


On Tue, Nov 7, 2023 at 2:18 AM Ian Abbott via tz <tz@iana.org> wrote:
On 2023-11-07 02:49, Paul Eggert via tz wrote:
> On 11/6/23 15:58, Jacqueline Seron via tz wrote:
>> The change of date for September 2023 appears in this government webpage,
>> second paragraph.
>>
>> https://www.interior.gob.cl/noticias/2022/08/09/comunicado-el-proximo-sabado-10-de-septiembre-los-relojes-se-deben-adelantar-una-hora/
>
>
> That web page is about changes in September 2022, not September 2023. As
> far as we know, it was a one-shot change and things went back to normal
> this spring.

Browsing through the list of notices at:

https://www.interior.gob.cl/noticias/

, the posting from 2022-08-09 seems to be the most recent
timezone-related one.  (Although I do not know the Spanish language, I'm
pretty sure I can spot anything timezone-related.)

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