Shanerjedi:
3PO states in the opening that "Lando Calrissian and poor Chewbacca never returned from this awful place".
Wait a second. Chewie shows up with Leia. So what is 3PO talking about?
You know, I remember thinking that about 25 years ago, and had since completely forgotten it! You're absolutely right. Chewie and Lando are clearly part of the plan, so it's not as if they've had no contact!