Power Query Reference vs Duplicate for Performance

[xlsBruh]

If I have query (1) with multiple steps and I need to have query (2) based on query (1). For performance and/or good practice is it better to:
A) duplicate it and then modify and or remove the steps carried over to get what I need
or
B) is it better to reference it and then create steps to get what I need?

 

[JEC]

When you create a reference, Power Query only stores a reference to the original data and doesn’t load the entire data set again. Also, updates or changes to the original source are automatically reflected in the reference without reloading the data.

So, I prefer a reference