What is the best way to show two questions in a single screen.

I'm working on a questionnaire, part of a web app. Until now the admin could form a questionnaire with different question types and rearrange them accordingly. Now it is needed to add the following functionalities: Show 2 questions in the same screen simultaneously. Don't make both of them mandatory. And finally make, in selected cases, the 2nd question to appear conditionally (depending on the 1st answer).

I was wondering how to show the multiple questions to the end user and if by making it clear and show all this different types of questions would result to a better UX.

Thanks in advance.