Yes you are correct. I was just starting to think the same so I checked the ground floor layout drawing which shows 3 lift shafts. The building shape is slightly different from the planning application, which also shows a second floor bridge linking both multistories. We will have to wait and see if the link bridge is built. What will be different is the application shows the 5th floor only extending over only half the building but counting the entrances to both cores the top floor will cover the whole building.