As described in Douglas Hofstadter’s book ‘Godel, Escher, Bach’, this is what happens when you connect your camera to your TV and point the camera at the screen. The spirals are created by tilting the camera.
Source: https://inv.nadeko.net/watch?v=Y-gqMTt3IUg
I’m currently reading this article here which links to the video. The article is about a zip file that contains itself.
If anything, modern tech introduced much, much more delay. Digital encoding and decoding takes time - and so do packet based transmission protocols.
Back in the day, radio moderators monitored their show by simply having the radio station on their headphones. That was over the day digital workflows were introduced.