How to do this sequence in 2.2.7

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Trying to make this work in 2.2.7 it all goes too fast for me and I miss something when I slow it down.
https://drive.google.com/file/d/1xIEvGEa...sp=sharing

I have this shape I am trying to work with as a test but any will do if somebody could talk me through whats happening to get the outcome?
https://drive.google.com/file/d/1QGC6kPr...sp=sharing

I have saved a sample to where this begins.
https://drive.google.com/file/d/1FzIFFuM...sp=sharing

Many thanks in advance.