That was one of the really good hidden cameos. There were tons of star cameos in this one.
They were all directors or producers of the Mandalorian. Dave Filoni who is a produce. Deborah Chow who directed Episode 3 and will return for 7. She also directed episodes of Better Call Saul. Rick Famuyiwa is the third pilot who directed this Episode and #2. This is a throw back to Star Wars A New Hope were many of the original X wing pilots were not true actors but were producers, writers and set people who filled in because they were running out of actors.
Another cameo I missed was Clancy Brown who has voiced lots of Star Wars characters. In this he played the Devaron named Burg. I will always remember him as Kurgan.
Of course Marl Boone Jr was the old friend and finally a bit more obscure was Richard Ayoade as the droid pilot you migjt remember him from the IT Crowd. Overall the episode was really good. Production value was really high. They CGI on the space station and the prison ship was amazing. I heard the that they are spending $12-$13 million and episode in this one it showed. It was a basic heist double cross plot but there was a lot of action and enough of a twist. I like how they slowed rolled the Mandos fighting ability. We were shown a glimpse into why he has the reputation that he has.
REMEMBER Episode 7 drops on Wed the 18th so that it does not compete with the opening of Rise of Skywalker.