Solved
stereo audio capture conspiracy
Why no stereo audio capture on Quest 3? Is it perhaps because aliens have infiltrated the company and are writing software that combines the two channels for some twisted plot to destroy the galaxy? Its the only explanation
Stream #0:0[0x1](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 64 kb/s (default)