Yes, I was planning to do this back then, but other stuff came up. There are many different ways in which this simple example can be improved:

- better detection of when speech ends (currently basic adaptive threshold)

- use small LLM for quick response with something generic while big LLM computes

- TTS streaming in chunks or sentences

One of the better OSS versions of such chatbot I think is https://github.com/yacineMTB/talk. Though probably many other similar projects also exist by now.