The word "discussion" could best replace the word "debate" in the sentence and the most positive connotation of "discussion" is "conversation".
Connotation
Any given word or phrase contains a connotation in addition to its denotation, which is its explicit or literal meaning. A connotation is a generally accepted cultural or emotional relationship.
Regarding its pleasant or unpleasant emotional link, a connotation is typically classified as either positive or negative.
Strong-willed and pig-headed are two adjectives that can be used to describe someone who is stubborn; both have the same literal meaning (stubborn), but strong-willed conveys admiration for how strong someone's will is (a positive connotation), while pig-headed conveys frustration when dealing with someone (a negative connotation).
Connotation has a variety of meanings that branch out from one another. Connotation basically refers to how anything may be connected to a word or phrase, such as an implicit judgment, value, or emotion.
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