This is timely. I'm in hospital having just removed a 9.4mm stone from one kidney and some stones from the other. I don't want to go though this again.
I have vague memories back in 1990 of a superman arcade game in a pub broadcasting the games image to my black and white tv with an antenna in a different room. Not HDMI but the concept is there.
There's a reason the FCC has RF standards otherwise there would be anarchy...anarchy I say!
Thankfully my kids are devouring my Studio Ghibli collection. Ny Neighbor Totoro and Ponyo are played multiple times in the day. They've not yet gotten to Spirited Away, waiting until they are a little older. I dread the day they turn on Grave of the Fireflies. I thank the stars they have outgrown baby shark and cocomelon.
While there may not be a clause in your employment contract there may certainly be a clause in the contract between your employer and the client that could possibly be more hassle than it's worth for the client.
The only way to know is to go through the process with the client, declare the possible conflict early on and let them research it on their side to see if it's worth going through with. Best of luck.
How can a non cool clueless child of the 80's join these secret clubs?