Arms or shoulders first in the downswing?

I am having a problem right now with an outside-to-inside path.  I video taped myself from dtl and fo views and I think I have most of my early extension and too-much-forward-lean problems solved.  However, I do know that I am consciously thinking to myself that I have to

1. slightly shift weight to left

2. start unwinding hips

3. start rotating the shoulders

4. start swinging the arms

I just read some stuff online that says you should start swinging with your arms BEFORE you rotate your shoulders.  So the sequence in that case would be:

1. slightly shift weight to left

2. start unwinding hips

3. start swinging the arms

4. start rotating the shoulders

Any thoughts?

iacas, then it seems what i read is either wrong or just from a different swing philosophy.  my body position does not seem to support letting your arms fall wherever if your shoulders pull your arms.

would you say your arms need to swing "more towards the ground" than where your shoulders pull them?  it seems my hands drift way too far away from me if i let my shoulder turn put them over the ball.  it would be nice if there were a simple drawing tool to illustrate.  so i'll go with a video instead.

It sure does "look" like he initiates the downswing like this:

1. slight thrust to the right followed with a hip turn

2. torso and shoulders start to turn

3. right arm drops but left arm is still connected to shoulder turn

4. when club is parallel to the ground, shoulders appear square (considering his tilt)

5. shoulder rotation "slows down" and obeys his tilt as club head "releases" into the ball

6. after contact, left shoulder whips around tilted spine axis

Am I missing something?  It seems there was a moment where his arms went faster than his shoulders. I know that's a different assessment than what I asked about.