This has never happened to me before, but I'm very curious to know whether it's possible, and if so, what it feels like. Has anyone ever had a dream in which you experience being multiple people simultaneously, none of which are aware of what the others are thinking, but when you wake up you remember being all of them?

I can imagine this sort of thing being possible in principle (e.g., by way of advanced neuron-manipulation technology), but again it would be very interesting if it could happen naturally in dreams.