Nice case of rivalry generating casual remark (10)

I believe the answer is:

pleasantry

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'casual remark' is the definition.
'pleasantry' can be an answer for 'remark' (I have seen 'Polite remark ' mean 'pleasantry' so perhaps 'remark' could also mean 'pleasantry'). I am not certain of the 'casual' bit.

'nice case of rivalry' is the wordplay.
'nice' becomes 'pleasant' (similar in meaning).
'case of' means to remove the middle letters (outsides of).
'rivalry' with its middle removed is 'ry'.
'pleasant'+'ry'='PLEASANTRY'

'generating' acts as a link.

Can you help me to learn more?

(Other definitions for pleasantry that I've seen before include "Humorous style" , "Joke, banter" , "An agreeable remark" , "crack" , "Sally" .)

I've seen this clue in The Telegraph.

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