Apple may lose key personnel due to changes in senior leadership, such as Mike Rockwell, who was tasked with saving the Siri project after CEO Tim Cook lost confidence in former AI head John Giannandrea. A deal appears to have been reached to retain Rockwell long enough to deliver the Siri upgrade, marking a significant victory for Ternus and Cook. The company also secured a significant win in retaining chip expert Johny Srouji, who had been considering leaving the company. The promotion of Srouzh to the company's hardware chief was also crucial as it would have been seen as an especially dangerous move to give all of the expertise involved in developing Apple silicon chips to a potential competitor.