How to connect this 2 Face in a curve?

Hi,

how to connect this 2 Face in a curve? I tried Bridge Edge Loops and LoopTools > Bridge, but it doesn´t get the result i want.

Thanks, René

You could try using spin tool. First select both faces, shift+s and choose cursor to selected, then select one of the faces, choose spin tool and rotate the disk that pops up. It works better if the face is in a correct angle:

Make the section with a curve and convert it into a mesh to connect it.
This method is probably the easiest and easiest to control.