As everyone else mentioned, conversation was very casual.
I was initially asked default questions like(15 mins):
- why mba, why duke, why now and go through your resume.
(started story from childhood

)
Second set were more specific (10 mins):
- How do u deal with conflict
- Leadership style
(I explained with examples even though not asked)
then more like(5 mins):
- toughest time in life
- achievement in life (i split it into personal and professional while answering)
some random questions i do not recollect now (10 mins)
then it was time for me to ask questions!
total : 45mins
she took about 1.5 pages of notes, not sure is that good or not!