For me, I don't get a link between ambient and classical.
I know thats a very broad statement and it only applies to my limited knowledge of classical music
and what I consider to be 'good' ambient.
I think the distinction between the two is that the ambient to which I'm referring too can create
'new' sonic spaces. What I mean by that is the element of manipulation of sound - so that even
acoustic sources can be drastically transformed. The sound becomes amorphous. I get a sense of the
mysterious and the ethereal from some ambient, which I don't get from classical.
Structure is an entirely different matter, as is tempo, how does a drone have tempo ?
'Play very very slowly with feeling'

I can't see a link between the electronic textures in ambient and any kind of instrumentation in
classical, or the use of field recordings, vocal samples, glitch etc.
Have there been many scores written for ambient music ?
cheers
Pete