Are Dark Souls 2 player ghosts realtime?

The ghosts are in fact real time, look at this video for evidence of this. I have also been able to communicate through the emotes with a ghost before (or maybe it was just a freaky coincidence)

Note This is Dark Souls 1 but like the other people have stated I don't see why they would change things.

I have waved and been waved back at by a ghost in DS2. I've also had one running around in me in circles whilst I was running down a bridge. which was weird.