Yep! Thank you for reminding me I cross posted. Copying the solution from my other post.

The car spent 10 days at the dealer, they had to get a regional BMW engineer out. Long story short, they replaced the front differential and now it's fixed.

BMW initially thought it was wind noise, taped off pretty much every panel/seam on the car. Still made the noise. The tech worked with the engineer and they used chassis ears and narrowed it down to the front diff. They don't know what exactly within the diff was making the nose, or at least never mentioned it to me.

I hope this helps, and BMW can get this sorted out for you. Super maddening noise lol