Brent said:
The total duration time in the summary task does not equal the duration times
of all the subtasks
Yes, that is quite often the case. The Summary line duration starts at
the earliest early start date of any of it's subtasks, and ends on the
latest early finish date of any of it's subtasks. Unless the tasks are
linked directly in sequence, this will not be the sum of the durations.
It might be longer or shorter, or, occasionally, equal.
Hope this helps in your world.