the maoster:
As above ^^^^ but with my pedants hat on you are misunderstanding a split break. A split break is where you have at a minimum 3 hours unbroken break within your working day. If you manage that you can work for 15 hours without it counting as a reduced break.
For what my opinion is worth I’d say a “split break” is 15 minutes followed by 30 minutes of break and a “split rest” is where you have 3 hrs unbroken rest allowing you to do a 15 hr day but not counting as a reducer.