Maybe I’m being naive, but I think teachers know that and judge that having such a designated question space is still worthwhile for when there are real questions (instead of expecting students to interrupt the flow of a lecture, which many won’t do and which may be disruptive, or them not asking at all and just being confused), and worst case they get asked to rephrase or repeat things they already said, which isn’t a bad thing anyway. And once in a while a question might lead to an interesting discussion.
Maybe I’m being naive, but I think teachers know that and judge that having such a designated question space is still worthwhile for when there are real questions (instead of expecting students to interrupt the flow of a lecture, which many won’t do and which may be disruptive, or them not asking at all and just being confused), and worst case they get asked to rephrase or repeat things they already said, which isn’t a bad thing anyway. And once in a while a question might lead to an interesting discussion.