Van Gogh’s brother pieces together horror movie (3,4)

I believe the answer is:

the omen

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'together horror movie' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Maybe you can see a link between them that I can't see?

'van gogh's brother pieces' is the wordplay.
'van gogh's brother' becomes 'theo' (I've seen this in another clue).
'pieces' becomes 'men' (man can mean a chess piece).
'theo'+'men'='THE OMEN'

Can you help me to learn more?

(Another definition for the omen that I've seen is " Film".)

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

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