Tony shrugged. "It was team effort," he explains, "Ant Man had the idea, I figured out how to make it work safely, Natasha, Thor, Bruce and I figured out where we could land to take the stones without messing up the timelines and we broke into teams so that no more than three people were in one place at a time." Stephen smiles quietly. "And I planted the seeds," he agreed, "by giving up the Time Stone. It had to be done in a way Thanos couldn't guess what we were up to until the last possible second so he didn't pull one of the threads out of line."