When you visit the Google’s chatbot bard’s website in Microsoft Bing. A New Button pops up besides the search bar which lets you compare bard results with Bing chat’s. I have no idea why they implemented this, well maybe to show off the their chatbot is better than bard or something?
That outlook setting is such a load of crap. Your two choices are “Microsoft Edge” or “Default Browser”. Why even have that setting at all? Just use the default browser!