Comment by skydhash

Being succinct goes a long way. I found that people rarely interrupts me because I try to convey my thought in a relatively dense manner. If asked one question, I answer that question in the first sentence, then the justifications and explanations. If I'm explaining something, I do the same thing with the abstract idea first, then detailing after that. I don't fear being interrupted, as that usually means I've been talking longer than needed.