The Hydra commercials in each episode help tie WandaVision into the MCU. Used to show reality breaking through, they help to highlight "other truths of the show," Feige teased. Long time Marvel fans will be able to piece together all the easter eggs while news fans can simply enjoy the retro commercials.
"If this is the very first Marvel MCU thing you're watching," Feige said in the WandaVision press conference, "then it's just a strange version of a '50s commercial or a '60s commercial that you'll have to keep watching the series to understand. If you have been watching all the movies, you might be able to start connecting what those things mean to the past."