OK, now you've got me curious - if they can do things like play volleyball, does that mean they are controlling the body together in a coordinated way, or do they take turns controlling it? If you pinch a leg, can they both feel it?
Believe it was their doctor who said "no". They don't physically feel sensation done to the other's half.
This was a very fascinating program, and I found I almost forgot they were conjoined after watching it for awhile. Very nice, normal acting teenagers. My question is what will happen when one dies? Since they have separate hearts, and other organs I wonder if they both would die at the same time.
Two heads, two hearts, two stomachs, three lungs, three kidneys, two gallbladders, two spinal columns; everything else as in a normal person. Right head, controls right side; left head, left side. Left head no feeling on right and vice versa. So how they coordinate actions that require two hands: piano playing, keyboard typing, playing softball, volleyball, swimming, diving, bicycle riding, etc. is a mystery to the medical doctors.