Why do so many people think WTD break = 30 mins per 6 hours?

WTD is 15 mins break up to 6 hours work, if working over 6 and under 9 you need to show another 15 mins break so 30 in total then once your second break finishes you can’t work over 6 hours without showing another 15 mins break, that’s my understanding now anyway, I used to think that if u worked over 12 hours you had to show another 15 mins before the 12 hour mark but I was corrected on another thread [emoji1303]

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