Crossword Genius

Expressing one's ideas when cogitation is permitted, we hear (8,5)

Ross

I believe the answer is:

thinking aloud

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'expressing one's ideas' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'cogitation is permitted we hear' is the wordplay.
'cogitation' becomes 'thinking' (I am not sure about this - if you are sure you should believe this answer much more).
'is permitted' becomes 'allowed' (I've seen this before).
'we hear' indicates a 'sounds like' (homophone) clue.
'allowed' is a homophone of 'aloud'.
'thinking'+'aloud'='THINKING ALOUD'

'when' acts as a link.

Can you help me to learn more?

I've seen this clue in The Irish Independent.
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