Some traffic not detected by app's firewall

[sm18lr88]

App: RethinkDNS 0.53i Device: Pixel 6 OS: Android 12, build #SQ3A.220705.004

Issue: I blocked Audible in both Wifi and Cell on the firewall, and have no other Amazon apps installed. When I open Audible to listen to pre-downloaded files, RethinkDNS's firewall shows blocked Audible requests, but upon checking my NextDNS log, I still see the connections to Amazon.

No other app is reportedly sending requests for Amazon related servers.

I have found Amazon apps to be the sneakiest among all apps on Android.

Let me know how I can improve the wording here, as I'm obviously not a programmer.