Crossword Genius

Audiences sigh if broadcast is futuristic fantasy (3-2)

Ross

I believe the answer is:

sci-fi

I'm a little stuck... Click here to teach me more about this clue!

'fantasy' is the definition.
(I know that sci-Fi is a type of fantasy)

'audiences sigh if broadcast is futuristic' is the wordplay.
I cannot quite understand how this works, but
'if' is found in the answer.
The remaining letters 'sci' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for sci-fi that I've seen before include "Doctor Who genre" , "Fiction genre of Philip K. Dick" , "Literary genre (abbrev)" , "SF" , "Fantasy genre based in the future" .)

I've seen this clue in the Sydney Morning Herald.
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