I’m trying to add up hours that are blocked from a scheduling application which allows “overlapping” blocked hours.
As an example of 1 person, for one day:

You’ll see that a simple addition of the duration is 660 min but it should be 480mins (if there was no double counting of overlapping blocks).
Is it possible for me to somehow not add times which are “overlapping”? (In the example the correct total blocked duration should be 480 min - 8:00 AM to 4:00 PM)
Note the source data is about 135k rows (for 5 years) and is of the following format:
The"Block Reason" is Sch Event Reason for Exam
“Start Time” is “Start Truncated”
End Time is “EndTrunc”
Minutes is “DurationCalc”
Just a bump in case there’s someone who knows how to do this…
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