Octavia 3 rs 2.0 tsi 180kw Coled engine noise.

Hi gang. As it cooled I noticed a strange sound after starting early when the engine is cold. No squealing of the tips when starting, scraping of the chain, etc. No screeching at idle. But when I drive, a strange sound comes to life from the engine part, see the video. The sound slowly fades as the engine can until it disappears completely. Car octavia 3 rs 2.0 tsi 180kw DKTB mileage 75k. Can anyone think of or has anyone encountered such a problem? Or is it normal? A friend does exactly the same thing on an Octavia 3 rs 180 kW but with a DLBA engine.

https://youtube.com/shorts/fW7PG67OaqQ?si=MJmsVRMmA9WWUtQN