I see this BS because of minimal trust for Microsoft domains
Blackbird and other W10 lockdown software block this implicitly, but I also block them explicitly in my local dnscrypt-proxy instance and in my internet router.
Too much spying gave me no choice, that includes blocks for most of the mainstream 'social media' domains, ad-domains (including amazon) and several non-essential google domains. If I didn't need google account stuff, real person verification, android and youtube, I'd seriously consider blocking all google domains, because their "Do no evil" mission statement is BS!
I only have blocks in my browsers to block cookies, other domains I missed, or where domains which can be abusive in some situations.
The correct way to detect no connections, should be continuous failure to connect to any internet address, during a set time period, a good one can be the time server, if set to an internet address.