Definition from Merriam - Webster online of concatenation
1: a group of things linked together or occurring together in a way that produces a particular result or effect.
שרשור - usually refers to companies. i.e. a parent company, a daughter company a grand-daughter company - etc. (or should i say: so on and so on).
I have never seen it used in this sense but I guess we can extrapolate.
Concatenation has become more acceptable in use as a translation for the phrase שרשור when talking about company structures.
Of course you may want to change the proposed phrase. This will also depend on context.
By the way - visavis 'context':The definition you have provided from the document's definition section is not that helpful in this case, being a specific definition for the document at had and not general.
I would be pleased to hear other thoughts on this matter.
Frank