I just noticed that on one of my longer pages that has Google Adsense' Auto Ads code on it, there are eight ads on it. That's right, placing the Auto Ads code on my site resulted in 8 ads appearing on one page.
I always thought the limit of Adsense ads on a page was 4. Maybe the rule is different for big pages, or maybe if you're using Auto Ads, then Google gets to decide.
It's a long page though, so the page doesn't look cluttered with ads.
Oh, but apparently, Google removed the hard limit of ads allowed on a page a while back (2016), says this article from Search Engine Journal.