The amazing thing about both assists is that, unlike Xavi, who twists his head to scan about once per second, Iniesta had his eye on receiving the passes the entire time he was waiting, and either intuitively knew or trusted that Cesc and Cuenca would be in the right positions to receive. As far as I can tell, both passes were blind. Maybe he heard his teammates call, but I'm guessing he just knew where they would be positioned.