I was checking out the network log from a Google search this evening and found a Google.com subdomain that I didn’t see before. It’s consent.google.com.
Basically, the browser will load content from the consent.google.com subdomain when Google asks for your consent, or when showing the “Privacy Reminder from Google”. This reminder can appear when using Google’s services. The reminder typically appears in a overlay on the service you were using.
You can read more about the reminder here: