Google is testing displaying results from the same domain name in a box that groups them all together. It doesn't save that much screen real estate by putting them in the same box, but it does subtly show to the searcher that these results are similar.
This was spotted by Valentin Pletzer and posted on Twitter, I cannot replicate this:
Here is his tweet showing both versions:
Google experimenting with grouping of multiple results from the same domain #google #mobile #serp cc @rustybrick pic.twitter.com/tzXZKr3Opr
— Valentin Pletzer (@VorticonCmdr) November 12, 2019
I am not sure why Weather.com is showing so many results on this page with that new stricter domain diversity rule but hey.
Forum discussion at Twitter.