Originally Posted by Paul

Actually, I asked how long has it has "often" been described as Live TV.

I asked around my family (and friends) and everyone defined Live TV as what you would expect, broadcast of an event as its happening, for example, a Football Match.

They consider the rest to be "Terrestrial TV" or "Streaming (TV)".
Granted, no one (I know) calls it Linear TV, but that wasnt the point, the point is they have never called it "Live TV".

Before streaming was a thing, it was just TV, and Live TV.