Tirades about circulation of air in bedsit (9)

I believe the answer is:

diatribes

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'tirades' is the definition.
The definition and answer can be both related to communication as well as being plural nouns.
Perhaps they are linked in a way I don't understand?

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for diatribes that I've seen before include "impassioned speeches" , "Harangues" .)

I've seen this clue in The Irish Times.

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