Flynn and Ovaltine

So is the "Be sure to drink your ovaltine" directing us to the movie A Christmas Story. The film A Christmas Story (1983) depicts the Little Orphan Annie radio show transmitting a secret message that deciphered to: "Be sure to drink your Ovaltine," using a secret ring decoder. See pics.

Interesting that "The most well-known example started in 1934 with the Ovaltine company's sponsored radio program Little Orphan Annie.[2] The show's fan club, "Radio Orphan Annie's Secret Society", distributed a member's handbook that included a simple substitution cipher with a resulting numeric cipher text. This was followed the next year with a membership pin that included a cipher disk - enciphering the letters A-Z to numbers 1-26."

There's a number of leads here. Ovaltine is owned by Nestle and the wiki (I know) on secret decoder rings alone which talks about TV and Radio usage needs digging….Comms???

https://en.wikipedia.org/wiki/Secret_decoder_ring

Any help with this appreciated