I believe the parent is referring to the URL/search bar, which does pass along every key stroke to Google. This is for purposes of search suggestions/autocomple

I believe the parent is referring to the URL/search bar, which does pass along every key stroke to Google. This is for purposes of search suggestions/autocomplete. Unfortunately, since search and URL are combined into a single bar on desktop Google Chrome, that means that every URL you type is passed along to Google, including some you may not want to be passed along. As Firefox has a separate URL and search box, it doesn't have the same issue. On mobile, it's a bit of a different story since there is only one bar for Firefox and it has the option to pass every keystroke along to your preferred search provider for suggestion/autocomplete purposes. I can't recall if it is on or off by default, though. I have it on on Firefox on Android.