Oh, on the receiver side. So Amazon pulled Chromecast support from their apps because they couldn't get reliable Cast protocol support on their FireTV. Thank you for clarifying.
Yes, that's basically it — they couldn't get reliable cast support to receive on the FireTV, and they couldn't reliably send from the Kindles due to Google's protocol changes.
And that was already after Google's anticompetitive actions against the Kindle Fire devices.
