I made a few comments over the weekend on that. The event wasn't faked and "blue screened" or "green screened." You are viewing several illusions where a telephoto camera (what I call the main camera) is looking at a sea of wide angle or normal view cameras, the cellphone cameras.
A variation on "smoke and mirrors." You can google "telephoto compression" to get some ideas, but combining that with viewing a distant wide angle display through a telephoto is harder to recognize as a "trick illusion."
Thanks!