So how did they incorporate the old show with the new?
Not sure what you're asking. The episode revolved around a classic show called
Astro Quest, a thinly veiled
roman a clef for
Star Trek. Langham's and Vassey's characters ran into each other at an SF convention and discovered their mutual fandom. The murder victim was a Ron Moore-like producer who had done a pilot for a dark, gritty, cynical, BSG-style reboot for
Astro Quest, and the fans reacted poorly, which was a suspected motive for his murder. (This is why Ron Moore's cameo was so brilliant -- he was basically telling himself off.) Along the way, Langham's character, who has a crush on Vassey's character, had fantasy sequences that were loving reconstructions of scenes from classic Trek episodes (or theoretically
Astro Quest episodes), with him as the toupee-wearing captain and her as various femmes fatales including a yeoman, Orion-woman Vina, and Shahna (or approximations thereof).
Since it was made by so many Trek fans, it was a pretty respectful pastiche. There were a few obsessed-fan characters, but it portrayed the whole gamut of audience reactions -- the devoted fans who dress up but are sane, competent people (Vassey & Langham), the folks who are outwardly "normal" but just like the show and know it well (Laurence Fishburne's character), the military vet who values the show's message of a peaceful future, etc.