Would I? If I'm completely honest, I can see situations where I'd do this, yes. Maybe with more diplomacy, and I'd make every effort not to criticise the other advice-giving party, but if, within my own sphere of expertise, I saw advice being given which I considered to be dangerous, or that could result in serious problems for the recipient, or would leave them gravely misinformed, then yes. I can see myself trying to rectify that.
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