Your IP address and a timestamp are enough to give google a pretty good idea who you are in many cases. If you log into any one of their services or use one of their products using that same IP address it's a pretty strong indicator. It takes surprisingly little "non-identifiable information" to figure out someone's identify. (for example: https://www.nature.com/articles/s41467-019-10933-3)

I'm pretty sure google has enough data to put 1 and 1 together the vast majority of the time.