I'm confused on exactly how you tapped the Ethernet signal before the Bose amp. Did you completely bypass the Bose? On the X3 connector (exact pin out I have for my 2024 AT4 HD) pins 1, 2 says Ethernet bus 6+ and 6- respectively and pins 11, 12 say AUTOSAR CAN Bus Serial Data+ and Serial Data-. Exactly how did you utilize these 4 connections to go directly into a DSP amp? And, did all factory chimes, warnings, phone and OnStar still function properly. I assume the volume control for the chimes/warnings and turn signals are probably very loud. Can you please elaborate? Thank you.