Is this still the basic division of work? https://hearinghealthmatters.org/wp-content/uploads/sites/9/files/2014/01/BT-Stack.gif https://hearinghealthmatters.o

Is this still the basic division of work? https://hearinghealthmatters.org/wp-content/uploads/sites/9/files/2014/01/BT-Stack.gif https://hearinghealthmatters.org/wp-content/uploads/sites/9/... Bottom layers beneath the HCI layer divider in HW, layers above software running in the "BT firmware chip" (I'm going to guess ARM-based)?