Fair. On typing the comment I stopped for a moment to think about other potential examples but I don't know if it's really helpful to speculate. And honestly I'm also just not sure what you could be uncertain about on the road where it's time insensitive enough that pulling over and putting on the four ways is a valid interim option.

I was just in SF last week and there was an intersection where a cop was directing traffic even though the stoplights were still operating overhead. Multiple waymos correctly obeyed the cop, and I assumed that's just something they can do visually, but it might also be a case where they would have a remote supervisor watching the video feed and affirming "yes, that's your signal to make the left turn you want to make" or "no, you can't go that way, turn right instead".