Pedro wasn’t in the Season 3 Gallery Doc, other than archive footage from previous seasons. Phil Tippett wasn’t in the doc either, despite being featured in the trailer for it.
It was an hour long commercial really, superficial, and of little interest. It did have a few minutes of the directors talking about their respective episodes. And Favreau and Filoni talking about what they were trying to achieve with season 3. Lots of people in it saying how they grew up with and love Star Wars again. The usual format and talking to camera.
This wasn’t a bad doc, just very bland, and wasn’t really a “Making Of” at all. It is the type of thing you have on in the background while doing something else.