Worktime break clarification

start 0445
break at 0645 for 30 mins which resets the WTD 6 hour rule and also is the first 15 mins of a split driving time break

If you have a reduced daily rest available then you must finish shift by 1945

WTD rule is that at no point in a shift must you do 6 hours work/drive without having a 15 min (not 30) break
But no authority enforces it BUT many companies do