Thought you might get some clarity from this previous post. Very easy to install and I’ve been delighted with the result.
The Sony unit I purchased isn’t the most responsive when using the telephone via Bluetooth, although answering calls is clear and easy. The DAB on the other hand is good and reception is just as consistent as my BMW with factory fitted iDrive etc. When using CarPlay for any activity; telephone, Spotify, Waze etc, it’s brilliant.