Failing to link up fully, you get nothing (3)

I believe the answer is:

nil

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'you get nothing' is the definition.
(I've seen this before)

I don't understand how the remainder of the clue works.

(Other definitions for nil that I've seen before include "0" , "Love" , "There's nothing left" , "none" , "Don't despair - . . . desperandum" .)

I've seen this clue in the Evening Standard.

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