One SEO professional asked John Mueller during the Question and Answer segment of a hangout about what counts as a click for an FAQ rich snippet.
They asked: does Google ever add links to FAQ answers, even if there isn’t one included in the text?
John explained that in general, Google counts it as a click if it’s really a link to your site and someone clicked on it.
Regarding rich results, John can’t say for sure that they would never add a link to a rich result that they show in the search results.
Sometimes, he could imagine that google does add a link. But, it’s not the case that they would say “Oh, there’s a rich result on this page. Therefore, we’ll count it as a click, even though nobody clicked on it.” It’s really more so that if there is a link in the results, and people click on it and go to your site, then this is what Google would count.
SImilarly, for impressions, Google would count it as an impression if one of those links to your sites were visible in the search results.
It doesn’t matter where it was visible on the page, whether it’s at the top or the bottom of the results page.
If it’s visible – theoretically – to someone on that search results page, then they will count it as an impression.
This happens at approximately the 26:23 mark in the video.