Can empaths hear each other's voices from a distance?

Yes. I know most people will say no, but the easiest way to think of it is that humans think along a, I guess best way to describe it, is a network. Feelings/urges that don't seem yours or being shared with people close to you figuratively or literally as well. It is entirely possible. If you're really focused on that person, like you can see them on the other side of a room of individuals and call their name loudly and you feel the urge of the moment that you need them for whatever reason, and if they didn't hear you, chances are they feel your need for them. It can also be done in meditation and sleep where distractions of life I guess aren't bogging down your mind.

No, definitely not. If they could it would be very easy to demonstrate, but of course it has never been demonstrated. It probably never will be. But what will continue is the proliferation of stories on the internet that are just exaggerated tales of coincidence.

Only if they're high or schizophrenic.

no