Chat seems like a really bad way to get patient information. You'll miss out on various cues doctors will use to diagnose you. People can get ashamed of their symptoms and may try to hide them.
You think that they have “days leading up to consultation”? Please don’t be so disingenuous; I’m sure you know exactly what the person you’re replying to meant.
In this regard. A doctor also just have 15 minutes for an interview. An Ai can be with the patient for days leading up to a consultation.
So if we remove this "handicap" this Ai will likely really start to win.