Thanks, James! 
Not to nitpick, but I still can't for the life of me work out how the head of Frazier at the edge of the landing--------i.e. several feet forward from the glass--------could be casting a reflection this high and this far west:

Given Darnell's perspective, and Frazier's distance from the glass, I would have thought the reflection dotted in green would be a less unrealistic candidate for Frazier's reflection:

Alan,
I present three animations from Darnell's POV, each with an individual moving eastward across the landing. The first moves the model 1 ft, the second 2 ft, and third 3 ft towards the landing. I hope this is useful for you. I will be happy to refine or modify at your request. I'm not sure I covered all your questions.
My opinion is that yes, a person further back, and somewhat behind Molina, could be superimposed with Molina's reflection. But Molina's reflection is there for sure.



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