Referred by an employee from my LinkedIn network. Hiring manager contact for phone screen followed by resume request. Over a subsequent period of 3+ months we exchanged emails, phone calls and participated in local visits by different people in the company (not hiring managers or leaders). Eventually had In-person meeting with CEO after which references were requested. Went to corporate HQ for 1.5 days of interviews with 6+ people from different departments. After an additional 2 months of reference checking, background checking and negotiations, an offer came in and was accepted. Total elapsed time was approximately 6 months.