Transmitting every piece of audio the phone receives would kill your battery in less than an hour. They absolutely need to do the "ok, google" detection on boa

Transmitting every piece of audio the phone receives would kill your battery in less than an hour. They absolutely need to do the "ok, google" detection on board and the reason for differential adoption between various phones seems to be that for always on with reasonable battery times they need to do it on a DSP rather than the application processor.