Are the universes of the series «Stranger Things» and the movie «Black Widow» connected?

Twitter users found a (fictitious) connection between the series «Strange Things» and the movie «Black Widow». At the center of fan theory is actor David Harbor, who plays the role of Sheriff Hopper on the Netflix series and played in the movie Black Widow. Fans think that he is the same person, and the Duffer brothers project is a continuation of a new film about a lot of superheroes.

According to the theory, in Russia Hopper was brainwashed and created a new personality - Alexey Shostakov. Then he took part in a secret experiment in the KGB, received a dose of the Soviet analogue of the formula that Captain America produced, and met Natasha - Black Widow.

Trailer «Black Widow»:
«Stranger Things 4» From Russia with love…: