How long will turbo last without oil?

Could you elaborate on the potential implications of operating a turbocharger without oil, specifically regarding its longevity? I understand that oil plays a crucial role in lubricating and cooling the turbo's internal components, but I'm curious to know how long a turbocharger could potentially function without oil, and what damage it might sustain in such a condition. Is there a general estimate or range of time that a turbocharger could operate safely without oil, or is it a case-by-case scenario? The answer to this question could help many car enthusiasts understand the importance of maintaining adequate oil levels for their turbocharged engines.