Bhagavad Gita, Chapter 6, Verse 3

For the man of meditation wishing to attain purification of heart leading to concentration, work is said to be the way: for him, when he has attained such concentration, inaction is said to be the way.

Where someone actually is matters. The right next step looks different depending on how far along the path they already are.

This isn't a contradiction between two instructions, it's sequencing based on real readiness. Detached action is how someone gets started, quiet meditation is where that same journey eventually leads.