The phone tree stuff on Pixel is decent but nowhere near 100% reliable or robust.
If it hears and understands an automated system speaking out a phone tree, it will start to list the options and you can tap on them. Usually works but often doesn't recognize that a phone tree is happening. Other times it recognizes the phone tree, but mistranscribes the options.
As a non-deaf person, it's a handy UX improvement. But I wouldn't recommend that anyone rely on it.
If it hears and understands an automated system speaking out a phone tree, it will start to list the options and you can tap on them. Usually works but often doesn't recognize that a phone tree is happening. Other times it recognizes the phone tree, but mistranscribes the options.
As a non-deaf person, it's a handy UX improvement. But I wouldn't recommend that anyone rely on it.