Increase the indent level to the top in outline when activity after the confluence point of Decision flow activity



After using the decision flow, the indent level of the float chart becomes deeper, but indentation does not rise much.
I have confirmed that the activities after the confluence are reflected more than once on the outline, so I think that we can judge the confluence point of the decision flow activity.

I want to overlook the flow of the entire flow in outline, but this specification obstructs the understanding of the entire flow and complicates code review.

As the following screen shot, How about improving raising the indentation level after the decision flow is combined?