Translation:What did the historian talk to the poet and the carpenter?
The question currently is "What did the historian talk to the poet and the carpenter?", which doesn't make sense with "talk" by itself. As others pointed out, "about" needs to be added (at the end is most natural to me), or it needs to be replaced with "say" to be proper English.
Since it is a question, it naturally follows the inverted form, where "historian" is the subject, "did + say" is the verb (auxiliary), and "What" is the object. Therefore, your explanation is inadequate because "say" works on its own here whereas "talk" would not.