Infer revue, every so often, should demonstrate chutzpah (5)

I believe the answer is:

nerve

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'chutzpah' is the definition.
(I've seen this in another clue)

'infer revue every so often' is the wordplay.
'every so often' means one should take alternating letters.
'infer'+'revue'='inferrevue'
The alternating letters of 'inferrevue' are 'NERVE'.

'should demonstrate' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for nerve that I've seen before include "Fibre carrying impulses from brain to body" , "Courage - impertinence" , "Spunk" , "Bodily fibre carrying sensation" , "Coolness under fire" .)

I've seen this clue in The Irish Times.

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