"A month to a year, depending on the industry and company, would be a lot harder. With a big company with long product cycles a month might largely be a vacatio

"A month to a year, depending on the industry and company, would be a lot harder. With a big company with long product cycles a month might largely be a vacation/autopilot too, but at a startup or in a critical time for a company, even a month could be life or death." You're right - you would need some extended period of time, especially at a larger company.