Does Section 654, subdivision (a) of the California Penal Code, section 654 of the Criminal Code apply to a defendant who has multiple convictions?

Section 654, subdivision (a) provides, in pertinent 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." Under the statute, "[a] course of conduct that constitutes an indivisible transaction violating more than a single statute cannot be subjected to multiple punishment. [Citation.]" (People v. Martin (2005) 133 Cal.App.4th 776, 781.) "Whether multiple convictions are part of an indivisible transaction is primarily a question of fact. [Citation.] We review such a finding under the substantial evidence test [citation]; we consider the evidence in the light most favorable to respondent and presume the existence of every fact the trier could reasonably deduce from the evidence. [Citation.]" (Ibid.)