[kupfer]

I think he is right. One of the places google servers are used is captive portal checks [1]. Here is a, albeit not very deep, thread discussing how to disable it and you can easily find reports of losing internet access on lineage if you block google addresses on your network. Otherwise a connection to google servers is made every hour or so.

I remember reading, that this is not the only place in LOS, that google servers are used, but I never looked into it.

1: https://forum.xda-developers.com/t/guide-how-to-avoid-the-ca...

[0daystock]

The captive portal check is a cookieless, cacheless request. Sure, you could argue Google "has your IP address" but it's a pretty absurd thing to worry about.

[Teever]

If your goal is to ensure that google has as little data about you as possible, this is not a pretty absurd thing to worry about.