Complex sentence: However, the effectiveness of such practice is subject to debate because there is significant controversy over whether the body is real, as visitors have noted the exceedingly waxy appearance of the corpse, as well as the speed in which visitors are ushered through the room.
Split into simpler sentences: However, the effectiveness of such practice is subject to debate because there is significant controversy over whether the body is real. Visitors have noted the exceedingly waxy appearance of the corpse, as well as the speed at which visitors are ushered through the room.