Desperately recruit next man to bring in old form of assessment? (6,3,6)

I believe the answer is:

income tax return

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'form of assessment?' 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 don't see?

'desperately recruit next man to bring in old' is the wordplay.
'desperately' is an anagram indicator.
'to bring in' means one lot of letters goes inside another.
'old' becomes 'o' (abbreviation as in OT - Old Testament).
'recruit'+'next'+'man'='recruitnextman'
'recruitnextman' anagrammed gives 'incmetaxreturn'.
'incmetaxreturn' going around 'o' is 'INCOME TAX RETURN'.

Can you help me to learn more?

I've seen this clue in The Telegraph.

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