When discussing consciousness what is often missed is that the notion of consciousness is tightly coupled with the notion of the perception of time flow. By any reasonable notion conscious entity must perceive the flow of time.
And then the time flow is something that physics or mathematics still cannot describe, see Wikipedia and other articles on the philosophical problem of time series A versus time series B that originated in a paper from 1908 by philosopher John McTaggart.
As such AI cannot be conscious since mathematics behind it is strictly about time series B which cannot describe the perception of time flow.