In Small Santiago / London, period no. 18, we have this sequence of glyphs:
Ga5-10 Ga5-11 Ga5-12 Ga5-13 Ga5-14 Ga5-15 Ga5-16
...    
Kb1-12 Kb1-13 Kb1-14 Kb1-15 Kb1-16      

Compare with Keiti's period no. 12:

Eb4-7 Eb4-8 Eb4-9 Eb4-10 Eb4-11 Eb4-12

Small Santiago / London, period no. 20 also seems to be related:

Ga5-22 Ga5-23 Ga5-24 Ga5-25 Ga5-26 Ga5-27 Ga5-28 Ga5-29
... -
Kb2-1 Kb2-2 Kb2-3 Kb2-4   Kb2-101   Kb2-102

That is: in Small Santiago / London there is the same continuity of subject during the periods nos. 18-20 as in Mamari. And in Keiti we find this subject in periods nos. 11-12.