are we speaking the same language

I had an interesting conversation today with the HR of an Indian based Multinational Company. Below is an excerpt

HR: we will need to remove 6 months experience from your total experience.

Me: Why!?!?!

HR: because you have a Bachelor of Science degree

Me: What do you mean by that?

HR: It is not an engineering degree

Me: No, i do have an engineering degree. I have Bachelor of Science in Industrial Engineering.

HR: Yes, you have a Bachelor of Science degree. it is not an engineering degree. Engineering degree is a Btech (bachelor of technology)

Me: (completely baffled probably even scratching my head)

HR: So that is why we need to remove 6 months

Me: Why 6 months?

HR : Because you did a 3 year degree.

Me: No, it was a 4 year degree.

Me: (realization dawns) I think we are misunderstanding each other. In India a Bachelor of Science may be a 3 year degree. However, at Purdue University where I read engineering, the degree offered is a Bachelor of Science. But for our purposes you can consider my degree to be equivalent to that of a Bachelor of Technology.

HR: I will have to get back to you.

Subtle cultural differences. Though i still dont understand why if one did a 3 yr program they were going to remove 6 month of work experience. And why 6 months why not a year?

(edit) I later found out 6 months is removed for the lack of a real world project work, which is part of the course of a BTech degree in India. But isnt the project work only for the duration of the semester which is usually only 4 months. So shouldnt they remove only 4 months of experience rather than 6?