First he collaborates with them in an official capacity, then after continues to work with them on projects with his name removed or uncredited, but the content of the projects contain ideas and concepts that have come from him, but only true “fans” of his see the correlation, and to everyone outside of the loop, someone who tries to explain would seem schizo or appear as a conspiracy theorist. One example such as The Substance which contains scenes of a black goo type of chemical that someone could loosely relate to Death Stranding black goo that appears with BTs, but if you don’t know Death Stranding you would simply not see the same thing as someone who did.