[luca020400]

Yep, everything you said is correct.

The AMSS has control of the hardware, but there's different components, each implementing different functionality, they may be able to talk with each other using various IPC mechanism, and they do, but mostly using Android as a middleman ( Linux )

WiFi ( known as cnss on QCOM ) is implemented in a different block than GPS, they don't have direct communication in place. It's routed via the Linux kernel ( and userspace processes )