We've seen Google testing showing page two results and more on the first page of Google's search results. More recently with the "more results" button on desktop (it is live on mobile). But also just plain old-fashion infinite scroll. Here Kiran posted a screen shot of an infinite scroll interface with a Google colored divider that shows page two results.
Kiran posted this screen shot (click it to enlarge) on Twitter:
Here is another variation:
Seems there are a couple of variations Barry.
— Andrew Åkesson (@andrewakesson) August 12, 2019
The test I saw has a circle around the page number. pic.twitter.com/bsk2lxCEcR
As you can see, the page two results are divided by a small 2 with a Google colored bar, in blue, red, yellow and green, then light gray.
This may be a bug for all I know, but it does seem like some sort of test from Google.
I personally cannot replicate this.
Forum discussion at Twitter.