Fillet/Blend edge failed

I would like to run a “fillet / blend edge” on the edges red. In step (A) the fillet should be equal to zero; the extremes of 0.6.
You can do this? Take a look.
Fillet_blend edge failed.3dm(375.6 KB)

You can do a reasonable job by doing it in two stages.
Fillet_blend edge failed.3dm (228.6 KB)