[Edit: I moved this post back to this thread. I also corrected the name of this thread.]
@Gobo You are very welcome. From first inspection it looks like there is more clipping in the highlights in P1440496 than P1440493. I guess it is possible to extract some of the detail from *93…
PS I would recommend GIMP 2.9.x. See Should I install GIMP stable or bleeding edge?.