The criminals, or the people they paid to carry out the physical attack, connected a Raspberry Pi to a bank's network switch, the same one hooked up to the ATM that was subsequently raided.

They're kind of skipping over an important detail here.

Sure the technical details are interesting, but it's a bit like discussing the alloys of the tumblers of the safe deposit box after the team has unexplainably bypassed the main safe door...