Would these native Romance language speakers understand each other?

So, if a French, Spanish, Portuguese, Italian, and Romanian person were in a room or in a situation in which they were forced to communicate with each other for the sake of survival, would they, despite the fact that they speak different romance languages, be able to communicate to a degree in which they would... show more So, if a French, Spanish, Portuguese, Italian, and Romanian person were in a room or in a situation in which they were forced to communicate with each other for the sake of survival, would they, despite the fact that they speak different romance languages, be able to communicate to a degree in which they would mutually understand each other? If so which people would understand themselves better?

*The Romance Languages are closer to one another than most of the world's other major language, so please, before you answer, make sure you actually have some knowledge of the roman languages rather than spewing out crap you know nothing about.
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