Is section 654 of the California Criminal Code applicable in cases of multiple convictions?

Section 654 provides, in relevant part: "An act or omission that is punishable in different ways by different provisions of law shall be punished under the provision that provides for the longest potential term of imprisonment, but in no case shall the act or omission be punished under more than one provision. An acquittal or conviction and sentence under any one bars a prosecution for the same act or omission under any other." (Id., subd. (a).) "It is well settled that section 654 protects against multiple punishment, not multiple conviction. [Citation.] The statute itself literally applies only where such punishment arises out of multiple statutory violations produced by the 'same act or omission.' [Citation.] However, because the statute is intended to ensure that defendant is punished 'commensurate with his culpability' [citation], its protection has been extended to cases in which there are several offenses committed during 'a course of conduct deemed to be indivisible in time.' " (People v. Harrison (1989) 48 Cal.3d 321, 335.)