The Engineers retrieved more instruments for the Duo. They expanded their philosophies with abstractions. Their chaotic mathematics became a 7/3 time signature. Their biology was fingers on strings. Their religion was sticks against stretched leather. Jokes, parallel fifths and octaves. Arguments, fugues and rounds. The Duo understood the Engineers, and the Engineers understood the Duo. The conversation between the two realms happened in this moment, right now. It could be remembered, but never reproduced.