I’d also encourage you to immediately drop this narrative of “only being an assistant in BD” - you are a very crucial part of the team, same as anyone else! I know it’s easy to fall into this trap of thinking that being more junior means we’re low on the pecking order and we’re immediately impressed if a partner wants to chat to us, but you perform an integral role in the team and the partners knows this
I’d encourage you to think of it as a sports metaphor - you may not be the coach or the star player but you’re a very key part of the wider team making it all happen.