Even after rewatching it several times, I couldn't quite figure out how the screen in the frame was implemented, such as in https://www.youtube.com/watch?v=DGsL8hA-1rE&t=52s (ROUND 1)
Was there actually a thin semi-transparent projection screen or a "transparent" LED screen in the frame?
@karotte I don’t have a source on this but I’m pretty sure it was added in post-production (or whatever live post-production is called) and the audience didn’t see anything except the goalposts and big rear screen.
@karotte (semi-) transparent displays do exist but I don’t believe any are capable of the brightness levels shown.