You sure like to ask loaded, open-ended question! The trick to this question seems to be the need to omit all the many ways in which drama and narrative do not differ. Maybe it is one of problems where, if you can state all the ways they are alike, then you are left with the ways they are different: But I am not "going there."
I am going to go out on a limb with a singular answer: That while a dramatic work must be or incorporate narrative as an essential device, drama is not an essential element of narrative.
I am going to go out on a limb with a singular answer: That while a dramatic work must be or incorporate narrative as an essential device, drama is not an essential element of narrative.
