Can people in Heaven communicate with each other? Can they communicate with each other?

For example, in Islam they believe that people in Heaven cannot talk or communicate to each other, because they are in some kind of "nirvana" (this is the wrong word, but I am not native EN speaker) or a happy-hybernated-statis state, and they can talk to each other. Something like in the movie The Matrix where the bodies are connected to a computer and they cannot move, but feel happy.

What does the Bible say about people in Heaven communicating with each other?
They can, it seems. The clearest example is from Luke 16:22-25:


  22 When the poor man died, he was carried away by angels to the bosom of Abraham. The rich man also died and was buried, 23 and from the netherworld, where he was in torment, he raised his eyes and saw Abraham far off and Lazarus at his side. 
  24 And he cried out, ‘Father Abraham, have pity on me. Send Lazarus to dip the tip of his finger in water and cool my tongue, for I am suffering torment in these flames.’
  25 Abraham replied, ‘My child, remember that [...]


The rich man is in hell, suffering, and he cries out to Abraham. Abraham is dead and in a far-off and elevated place. 

If even this person in hell can speak with Abraham, then surely Lazarus, who is right beside Abraham (and not secluded and separated from him like in the "Matrix" description you give), must be able to speak to Abraham.