Just say the thing.
As a technical person in a sales organisation, I have started doing this. Yes I get told, “but you should know this”, or “stop interrupting”, the way I see it, if I don’t understand it, someone else also may not
I decided a long time ago that I was going to be the person who said "I don't recognize that acronym, what is it?" and "I'm sorry, this isn't making sense to me, can I get some context?" I must have said that dozens of times. I've never had any one say "how can you possibly not understand this?" and I've had people reach out multiple times saying "thank you so much, I was totally lost as well."