In what circumstances will a court sentence a defendant for committing two armed robberies at the same time?

By contrast, in People v. Marquez (2000) 78 Cal.App.4th 1302 "[i]n one seamless ill-conceived effort, [the] defendant walked up to the counter at [a] [r]estaurant, threatened [the] waitress . . . with a handgun, thereby convincing her to hand over her tips lying on the counter and [the restaurant's] operating money from the cash drawer. This was an indivisible transaction involving a single victim who was forced to relinquish possession of two separately owned amounts of money at the same place and at the same time." (Id. at p. 1307.) The trial court "erred in sentencing [the] defendant for committing two robberies when only one occurred." (Id. at p. 1308, italics omitted.)