While Severide helps the woman off the ledge, her hands change positions multiple times even though they're supposed to be stuck to the pipe.
The term "robbery" is used by several characters (and the NBC official summary), notably the police, to describe the crimes taking place. A robbery is taking something by force, while a burglary is illegally entering a building or vehicle in order to commit a crime, such as theft. Accordingly the crimes that took place here were burglaries, not robberies.