I have been able to remove reflections and if I denoise as step 2, when the AI updates, the reflection reappears. If I denoise first, the reflection is not removed.

Here is the image I described above that was shot from a bus in Madrid after I had first removed the reflection perfectly with the reflection tool and then denoised.  If I denoised first, the reflection in the center of the image would not remove using the reflection tool.