I didn't try but I made a quick reflection on that;
If your goal is to have the least features, it might work. But that would mean that the secondary contour flange would need to start on a cone.
A cone means a Lofted Flange; and creating that Lofted Flange means two sketches...
And with the Lofted Flange you might have a very hard time to get the exact position of the bend between Lofted Flange and Contour Flange.
Anyway you made me curious and I did a quick try;
It doesn't work:
This reminds for the Lofted Flange;
This should work in a future improved Lofted Flange
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