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No, no. This is the kind of conversation that two people have when one of them is female.
— Vince • Fierce Creatures

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker brushes off an objection with a firm "No, no," then claims a certain kind of conversation only happens when one participant is female. It's a sweeping generalisation about gendered talk, delivered as if obvious, and it reflects the speaker's view rather than a fact.
Context reviewed