"for both of them to see the same thing..."
It depends on how they told it.

If they told it at the same time, or in the same room, then one person's image can affect the other's.

There have been studies on this, they give people a seance and then get them to tell the examiner what they saw. When they tell the examiner in a group they all come to the same image, but when told separately it's a whole lot more vague.
(Frozen_Banana Shaved against the grain; thoroughly unrewarding., Mon 7 Jul 2008, 17:52, Reply)