Venting: tutors who do not wait for the student to process

I have been trying desperately to learn a particular skill set at work. The issue is that each person who tries to "teach" me just wants to talk at me without waiting for me to process. I am an adult and know how to cut off a talker and ask for them to wait, but ohmygod, why do they not get it after the first few times I interrupt?

I've just been steam rolled -again - by a well intentioned person who really wants me to learn. But there's a basic idea I must understand before anything that I'm just not getting. Plus, after I finish this assignment, it will be months before the next project of this type can come to my desk, so no opportunity for reinforcement.

I'm so frustrated, I ended the session and promptly burst into tears. I give up.