Would an E9 comply if ordered to attention by an O1?

Yes. He/she would comply. But there would be consequences.

I am glad to say I had mostly good officers and many great NCOs also while I was in. I was a Spc and more than once I had officers and NCOs who reported to me for details. I didn't deal with many LTs, but the CPT I normally worked with would ask for my advice and follow it with no problems. The one-time I had an issue with an LT was when I was driving the BDE CMD, I had am LT order me out of the vehicle and he had me do h push-ups in the middle of the road, I was only up to about 10 when the COL ordered me to recover and count for the LT who then proceeded to attempt 82 push-ups. That was an eye opener for me 2 weeks out of AIT.

Yes, and then in private, let the Lt. know how little he actually knew about the Corps, or life in general.

Yes but a good captain will reel the Let in

In my day respect the rank and not the person.

According to regs yes but that just made his life mistake.

A an E-9 would comply with the directive however shortly thereafter the upper echelon staff of the command would take a big giant shit on the 0-1 behind closed doors

At FT Carson in the 90s I seen a CSM and 1SG rip a 1LT new asshole....nnw that is reality tv

Sure as a the military courtesy. Later the 2LT would be schooled.

Yes. 2Lt would catch hell after SGM talk with COL. though.