Smarts Businessing

So, here we are again, again. Picture above is from the movie "Coco" from Pixar and Uncle Walt. On the wall we see a poster for "The Incredibles 2", coming out later this year. Cool, and...good marketing.
Recently watched an old RKO "Dick Tracy" film from 1945-there's a scene on a street with a movie palace showing a double feature-curious, I checked IMDB and the two films were coming out from RKO the next year.
I thought, "Sharp promoters, RKO. I wonder if the other studios practiced this promoting?"
Yup. Also happened to watch Warner Bros. "Torchy Blane-The Adventurous Blonde" from 1937 and once again a movie house is shown showing one of Warner Bros. films, "Strike Up The Band" with Judy Garland and Mickey Rooney.
Very cool, and very smart marketing.
Sometimes it can be...odd.
In 1985's "Echo Park" there's a film poster on a wall of the low rent horror movie hostess "Elvira", who was played by Cassandra Peterson...who is IN Echo Park as another character. I doubt that RKO or Warners could have pulled that off.
Keep you eyes open, and there's all kinds of stuff happening.