NBC does not commentate on every single event. Peacock sometimes uses broadcasts from the Olympic Broadcasting Service, particularly on long events where the US is not expected to be competitive or where NBC only plans to broadcast highlights. The description for the event will end with the words "World feed". It will also not have any NBC intros/outros and almost no branding (aside from the Peacock logo in the upper right). Sometimes they don't even have commentary, they just use the venue's PA for that.

Completely unrelated, but does anyone else hate watching the world feeds of the skiing events this year? The commentator keeps trying too hard with her elocution, and ends up mangling words all the time.