If you look at official Blu-ray releases or digital storefronts, 1077.5 is often labeled as "Episode 1077.5: The Shadow of the Black Organization - The Night Before the Reunion" (unofficial translation). It functions as a that contextualizes the high-stakes tension of Episode 1077.
Conan notices peculiar ink stains on the studio’s catering cart and a draft coming from a ventilation duct that shouldn't be open. He realizes the script wasn't stolen for spite, but to hide a last-minute edit that revealed a real-life scandal involving one of the staff members.
It is highly likely you are referring to one of the following:
Blocked Drains Reading