overtaking paths

[mattwigway]

Notice that the later path arrives at the destination before the earlier path.

[mattwigway]

I think that particular origin is likely fixed, but here's another one to chew on:

[mattwigway]

My current working hypothesis is that this is a display bug in the Marey graph. Note that there is a dot of the same color as the circled trip further to the right, and that the right-hand readout says three rounds even though only two are pictured.