N7 & iPhone Streaming

After months of complaining about not being able to control the N7 microphone level when streaming to it directly from the iPhone, I realized how to do just that.
In my configuration of  the Cochlear iPhone app, the Audio Source panel offers Mini Mic,  TV (Streamer), Telecoil, and Off,.  If  you have nay of the first three chosen, the more control allows control of the microphone level relative to the streaming level, otherwise that control informs that you are Not currently streaming.
But if your Audio Source is actually the phone, the more control allows control of microphone level, with phone level control on the phone itself. On a phone call, you have to be on the call to make any adjustment, or have some app running that will continue to stream when you switch to the Cochlear app.This mode seems to be a black hole, can’t back out of the phone as the audio source without stopping the function on the phone itself, as when you hang up the phone after a call.These level settings do not seem to be reliably retained, and often return to some default level.
Several Cochlear staff people were unable to point to this way to control the phone streaming level:  try this, try that, it’s Apple’s fault, we’re working on it.
I’m delighted to hear that the latest version of Android (10) will work with the N7, breaking Apple’s stranglehold on the phone streaming market.
But on the whole, I’m very happy with the N7.