Firebase Android Default Setup and User Privacy

I followed the setup steps mentioned in Firebase docs in order to setup Firebase in my android app:
https://firebase.google.com/docs/android/setup

However, after monitoring the outgoing http connections using Charles, I found the following URLs being accessed:

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  • https://play.googleapis.com

    https://www.googleapis.com

    https://ssl.google-analytics.com

    So my questions are:

    1. Which of these URLs are used for Firebase analytics (I have read that Firebase analytics automatically collects information without doing any explicit call to Firebase analytics api)?

    2. Is there any possibility to turn off sending information to Firebase? so I can control exactly the sent information for user privacy requirements? I have read in the documentation that it is possible to de-activate analytics by setting “firebase_analytics_collection_deactivated” to true:
      https://firebase.google.com/support/guides/disable-analytics

    So does setting this flag to true prevents automatic upload of data?

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