Two of the witnesses did and never changed their stance. I think that tells us all we need to know.
Are you responding to the post you have answered? If so ... which two of the three in your opinion, have never changed their stance?
Jes thought he crossed the road to speak with Gerry; Gerry thought he crossed the road to speak with Jes and stood on the road while in conversation; coming upon them when they were stationary Jane could only remember that one stood on the pavement and one stood on the road but was not specific about which pavement or who stood where.
If Jes crossed from his stated starting point to approach Gerry ... he would be the one standing on the road ... with his child and buggy also on the road.
We don't actually need to know anything though, do we. But in my opinion a tad unsafe for "us" to form any firm conclusions about an event which "we" did not witness when those who were there could not.
These are early memories from the three who were there, supposedly more reliable than later ones, but I don't see the formation of any steadfast stance being made by anyone.
Sometimes I think the sheer horror of the situation these people found themselves in ... two less than an hour later ... and the trauma suffered as a result, is generally underrated.