None. Try: 4. The discussion was / has been great, and thanks for the sound advice you gave / have given me.
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Mister MicawberNone. Try:May I know why not " had been great" since the discussion is over...in the past??
4. The discussion was / has been great, and thanks for the sound advice you gave / have given me.
The discussion has been great, and thanks for the sound advice you give me. - ALL present in time
I don't really understand what you want to know about this sentence. It is OK if you are talking about continuing discussion up to th