BLE Channel Sounding Implementation

I am building a tag-to-anchor system that must pass signal over Bluetooth Low Energy using the IndieSemi IS2064GM-0L (https://www.indiesemic.com/product/683ec7f9f6137a265ce715a3). The goal is straightforward: create a robust BLE channel that lets the tag to send signal.

Here is what I already have in place:
• Hardware prototypes based on the IndieSemi chip for both tag and anchor
• Basic ADC input on the tag and DAC/output stage on the anchor
• A rough concept of the desired latency and power targets

Acceptance criteria
• Measured packet loss below 1 % at three metres line-of-sight
• Source code builds with the current IndieSemi SDK without warnings

If you have shipped similar BLE audio or low-latency data links before, please outline that experience in your bid and mention any tools (e.g., Nordic nRF Sniffer, Ellisys Bluetooth Analyzer) you like to use.