It's all about reading the room. If you're talking to a hostile crowd you're not going to expose weakness. I hope that most of these internal alignment meetings are not hostile, and are instead conducted with the intent to best deliver value to the business. In these instances, I have found comments like "I'm sorry to ask a basic question here..." work well to explain that I probably don't have as much domain experience as the others in the room; that I'm not trying to school them on their domain; and that I'm simply trying to gain understanding so that I can contribute.