In the "Diamond Jack" episode when Jack, Janet, and Terri were in his bedroom tying the bedsheets together. Jack sent Terri out to talk to the crooks for about 5 minutes. At 18:53 the door to the girls' bedroom is half-opened, if you look inside at 18:53, the beds are gone and the wall that separated the two bedrooms is gone as well. You can see Jack and Janet continue tying the bedsheets. From a technical point of view, the camera had to be positioned inside the girls' bedroom in order to film what was happening inside Jack's bedroom.

Also, noticed from season 1 to season 8, that there never was a time when the two bedrooms were shown simultaneously in the same episode. I am referring to the camera actually following them into their actual bedrooms. If the inside of the girls' bedroom is shown then Jack would just run in and out of his bedroom only, and vice versa if the inside of Jack's bedroom is shown, then Janet or Chrissy, Terri, and Cindy would just run in and out of their bedroom as well.

Sorry everyone, wrong forum. It was supposed to be on The Three's Company Message Board. Disregard this subject unless you love Three's Company.