junyuB - this feature is a great idea, but if the intent is truly to "engage your audience in real-time" as you mention above it does seem to be missing critical functionality that others have eluded to above.
The same functionality is discussed/requested in these two references in the community:
The functionality I'm referring to is the ability to have a multi-question form, and to be able to interact with the form respondents one question at a time. For example, putting the QR code on the screen for the audience to scan would allow them to answer the current question shown on-screen only and display the results live without respondents needing to complete the entire form.
The current functionality is a little bit counter-intuitive in my opinion if the aim is audience engagement. If the form is more than a couple of questions long there would be a "dead air" during the presentation while audience members are reviewing and responding to the entire form and clicking "submit" before any engagement or review could proceed.
The only way to do this using Forms right now is to create 30 individual forms for 30 individual question you'd like to ask your audience. If you create a mock-up of a multi-question form where each question builds upon interaction from the last question's responses/discussion and walk through it with your colleagues, you'll likely see what I mean.