Bisexual / Pansexual discussion

I would like to open a discussion which has been on my mind quite a bit over the last year. I have heard the term “pansexual” used specifically to dissociate an orientation from bisexuality by suggesting that the former includes trans and intersex people, while the former excludes it. In my experience, this has never been true of any bisexual person who did not possess a negative attitude toward such people.

While the term “pansexual” may be more accurate (there are more than two possible biological sex categories, much less gender identification!), I find myself uncomfortable about this shift in terminology for reasons I am not entirely able to articulate. It sometimes seems like those who claim the term pansexual are doing so out of a wish not to be identified as bisexual, and that leads me to wonder if the specificity they claim is really unique.

Hence, I would like to ask a question: For anyone in my audience who identifies specifically as bisexual, if you are comfortable with making this information known, do you also experience attraction to trans and/or intersex people? Have you known any people who identify as bisexual and do not?

Basically, I would like to gauge how many people would hypothetically fall under the pansexual identification while instead identifying as bisexual for any or no reason.