Ive got a Audi A4 B8 with the 2.0tdi. Ive noticed this bearing noise recently. I hear it when accelerating hard. Accelerating slightly on highway speeds, But i can hear it the best when turning left, and Even more when turning left and accelerating. Its coming from the front. I checked the front left wheel bearing for play, But it looked and felt ok. Here is a YouTube clip with the sound: 18 August 2021 - YouTube
I accelerate at highway speed, around 2 seconds in the clip.