Here is how it looked when I bought it. It had only a single short stalk.
The coral now looks like this. The two stalks are now in the process of splitting completely in two.
The taller stalk appears to be starting to split also. Looks like the whole process will repeat itself soon. Some people complain that these things can grow like weeds. I look forward to the day I can prune these and perhaps trade the frags for some different coral.Meanwhile, my original Xenia has completely disappeared. I examined the rock it had been attached to and couldn't find a trace of it anywhere.