@Framar I didn't mean to ask if any the parts in the screenshot that you sent are a purge tower but if there is a purge tower at all in that example.
I would say its best to download Cura and add your own stl's and slice to see the times, thats the best way to get a real understanding. You don't need to own the printer to be able to do this 🙂
Here is an example
PLA print and support from extruder 1 only.
PLA print + PLA support extruder 1 + PVA floor/roof support extruder 2
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