Time needed to complete Full-Stack Engineer Career Path

I am starting the Full-Stack Engineer Career Path. Everywhere I have read mentions the course takes roughly 6 months. Is this estimate based on a full time learner (40 hrs/wk)?

A similar question to help answer this is, What is the total estimated hours to complete the path? (i.e. the estimated total hours given for the front-end engineer path is 350hours).

Any facts, links, or simply personal experiences is much appreciated.
Thank you