You see when the chatbot is working.

Used to be you'd send a question and just stare at the screen wondering if anything was happening. Now after a short delay, you see 'Still working...' pop up with a Cancel button next to it.

It's a small thing but it matters. You know the app didn't freeze. And if you realize mid-question you asked the wrong thing, you can stop it and rephrase instead of waiting for an answer you don't need.