Does Section 654 of the California Criminal Code bar multiple punishment for convictions based on a single physical act of possessing a firearm?

Section 654 prohibits multiple punishment for two or more convictions if the convictions are based on "a single physical act."¹⁰ (People v. Corpening (2016) 2 Cal.5th 307, 311 ["[I]f the different crimes were completed by a 'single physical act' . . . the defendant may not be punished more than once for that act."]; People v. Jones (2012) 54 Cal.4th 350, 352, 358-360 [ 654 bars multiple punishment for convictions based on the "single physical act" of possessing one firearm].)