Kb1-7 looks similar to Ga4-21:

 

Kb1-7 Ga4-21

We might therefore say that these two glyphs are parallel, even though they appear in slightly different locations, Kb1-7 immediately after subdivision no. 15 and Ga4-21 inside subdivison no. 14.

Furthermore, Ga5-1 is similar to Kb1-2:

Ga5-1 Kb1-2

Here, however, they are clearly not parallel glyphs. The hands are differently oriented, the arm in Kb1-2 is pointing up while the arm in Ga5-1 is pointing down.

Possibly Kb1-2 signals that subdivision 14 is the last one belonging to the first half of all the 29 (?) subdivisions of K. Subdivision no. 15 would then mark the middle.

Ga5-1 might similarly signal that subdivision 16 is the first one belonging to the second half of all the 31 subdivisions of G. But if subdivison no. 15 marks the middle, then subdivisions nos. 29-31 of G would be outside (beyond) the second half.

Certainly subdivision no. 15 may mark the middle, because presumably we have glyphs there which announce this:

Ga4-23 Ga4-24
Kb1-4 Kb1-5

We can count 6 + 6 = 12 in G and twice 2 + 1 = 6 in K.

In K subdivision no. 16 does not end here but continues parallel with subdivisions nos. 17-18 in G, also a sign that things are changing here, when we are passing the middle. We should take notice of the fact that subdivisions nos. 14 and 16 (according to the structure of G) have no glyphs at all located in parallel in K.

These two subdivisions (14 and 16) are the only ones where the glyphs of G and K are totally unparallel.