The correct interface for ChatGPT + search is just...ChatGPT. But it can also show you a list of web search results, when it's appropriate.
A super-clean interface, that always shows you exactly what you want.
That would be a killer feature and represent a real threat to Google.
At least one person is working on this:
https://twitter.com/hsu_steve/status/1623388682454732801
While something like this would of course be incredible, even just current ChatGPT + the ability to web search for you would be quite amazing.
If MS isn't ready to completely replace Bing, then they should've made it an entirely separate page: bchat.com or something.