Originally Posted by
sunnyside
The three ghosts don't reply to Andrew, but his *speakinging* to them does some to provoke a reaction and all three couldn't help but turn toward Andrew. Maybe just a very basic human response still there to being addressed, maybe some surprise that they could understand Andrew. Andrew isn't sure. He also isn't sure if their issue is that they have problems with communicating or if they're just too intent on Michael to want to reply.
However that distraction turns out to be all Michael needed to zip around the one ghost in a position to intercept him. That gets him out of immediate trouble. But the three start after him again, and Andrew worries that they might be able to eventually keep up if they have the typical undead endurance. Michael is going to exhaust himself fast running like that.