Google has updated its Help Center page to explain how you can verify if you’re using the Google Account.
You can now check whether or not you’re signed into your Google account by typing in your username and password into the Google account field.
You also can check whether you’re in the Google Wallet app by typing your Google Account password into that field.
It looks like you’re signing in to the Google Assistant Google account, so you’re not actually signing in, but it will still be possible to verify your Google login credentials by typing them into that box.
You’re not limited to just signing into Google Assistant, though.
If you’re logging into Google Search or Google Maps, you can also check if you are signed into Google Photos, Google Play Music, and Google Hangouts.
You may not need to do this if you’ve already signed into the account, but if you do need to verify, you’ll need to sign out of the Google Accounts to do so.