Ok: the pack n play comes with a "bassinet" and a "napper." As I understand it, the bassinet is the flat surface with the mattress that fits in about halfway down the pack n play. The napper is the cradle-looking thing that is smallish and rests on top of the whole contraption. When people on this app say "bassinet of the pack n play," though, which do you think they are talking about? And in which are you supposed to sleep an infant?