Or do you want it to speak to you too? I think this would have to be TTS on your phone. You can have ChatGPT speak to you but I don't see that feature in Codex.
Sure I speak to ChatGPT all the time and I've used the feature you've linked but it can't do the things I described. It won't be like, "hey let me go look into that" and then come back in 3 minutes with an answer. It's essentially a dictation feature.