I'm not convinced that if you took away all sensory input (literally all, including internal, not just a deprivation tank) that humans would have the ability to experience the passage of time. I'm certainly not convinced that this is so thoroughly proven we can use its measurable absence in LLMs to determine that any intelligence using an LLM as a primary cognitive component can't be conscious.
Well if you include internal you'd have a blob of neurons which on it's own wouldn't do anything. The point is not that it can "know time", it's the ability to handle time in a continuous matter with respect to all sensory inputs/outputs
