Felt a bit underwhelming the example of communication between them, if it will be just that way.

Wolfram Alpha is good, but doesn't hold a candle to how ChatGPT process and understand natural language. That ChatGPT send verbatim the end user input to Wolfram Alpha seem a small step forward over going to Wolfram Alpha and do the very same question.

Now, if the output of ChatGPT is in the Wolfram Alpha "language", expressed in a way that it transmit the ChatGPT interpretation of the question in a way that Wolfram Alpha interprets in the same way (like, i.e. you can ask ChatGPT to make the output in mermaid.js language or any format or programming language) that could be something.