Performing loop queries using FME

Do you need to loop? i.e. is the result of the first query required for the second query or do you just want to make multiple queries?

Thank you @ebygomm. I would like clarification on the process of collecting values ​​from the second connected segment (sometimes there is more than one connected segment) and performing multiple queries. Once completed, I select the next segment, and so on.

Whilst it’s possible to do some looping in FME, I’d nearly always choose to do looping within a python caller if it is required.

Do I have to use Python development, or are there other, simpler solutions?

In my experience, looping in FME is often more complicated than a python solution 

Just one last point, I would like to know what type of python PythonCaller uses (pyQgis, ArcPy, or FME's own library)?

Thank you in advance for your help.

Many thanks @arenscott. I think this is an excellent way to solve this issue.
I also thank @ebygomm for his suggestion, but unfortunately I'm not very proficient with PythonCaller.