Comment by okso

I am using GrapheneOS. GrapheneOS has a compatibility layer providing the option to install and use the official releases of Google Play in the standard app sandbox.

See https://grapheneos.org/features#sandboxed-google-play

NetGuard also shows network requests from GrapheneOS itself, all proxied by the GrapheneOS project, as described here: https://grapheneos.org/faq#default-connections