A project being open source does not mean it isn't owned and controlled by a company. Chromium is entirely controlled by Google. It accepts contributions and fixes from others, but Google has the last say on everything, so it still has lots of Google telemetry.
Chrome is Google, and it is based on chromium, an open source project
Android is also open source and developed by Google… these aren't mutually exclusive
If you want chromium without Google get 'ungoogled chromium'
A project being open source does not mean it isn't owned and controlled by a company. Chromium is entirely controlled by Google. It accepts contributions and fixes from others, but Google has the last say on everything, so it still has lots of Google telemetry.