What is the test for a single charge under section 654 of the California Penal Code?

Under Penal Code section 654, as construed in Kellett v. Superior Court (1966) 63 Cal.2d 822, 48 Cal.Rptr. 366, 409 P.2d 206, all offenses arising out of a single act or course of conduct must be prosecuted in a single proceeding, if the prosecution is or should be aware of them. ( Id . at p. 827, 48 Cal.Rptr. 366, 409 P.2d 206.) "Failure to unite all such offenses will result in a bar to subsequent prosecution of any offense omitted if the initial proceedings culminate in either acquittal or conviction and sentence." ( Ibid ., fn. omitted.)

[166 Cal.Rptr.3d 704]