Group 1 - The departure of Walker, who was in charge of Siri, is significant as it reflects Apple's challenges in advancing its AI initiatives [1][2] - Walker was demoted due to delays in the new Apple intelligence upgrade for Siri, which is expected to be postponed for over a year [2] - Following his demotion, Walker was overseeing a new team focused on developing an AI-based web search tool to compete with existing platforms, indicating Apple's intent to strengthen its position in the web search market [3] Group 2 - Walker's role was part of a broader senior staff initiative under John G. And Andrea, highlighting Apple's ongoing efforts in AI despite perceptions of being behind in generative AI [4] - During its recent keynote, Apple chose to focus solely on its core competencies such as hardware, design, and engineering, avoiding discussions on AI and other distractions [5][6] - The company is positioning itself for a strong holiday season by concentrating on product innovation and upcoming device launches, despite some challenges like the iPhone Air delay in mainland China [6]