ChatGPT mentions are not the same as SEO rankings
A Google ranking is a position on a page you can screenshot and re-check. A ChatGPT mention is the outcome of a generated answer that may differ between runs, between accounts, and between sessions. The unit of measurement is not a position — it is a rate across repeated samples.
That difference matters for reporting. A single answer where you appear is not evidence that you are visible, and a single answer where you do not is not evidence that you are invisible. Both are one draw from a distribution, which is why serious tracking uses a fixed prompt set run on a schedule.