The lack of logical senses amazes me.
You´re referring to a gravity experiment in an *air-emtied* vacuum chamber where diferrent weighted objects falls with a similar velocity - compared to different velocities out in the real nature.
And then you state that *gaseous elements* have no significant importance!?
Once again, the gas in the air produces a frictional force. That will slightly delay the body with a larger cross section. But the frictional effect is very small for most larger bodies.
Two forces: gravity and friction. The total produces the observed acceleration.
If there is a vacuum, there is no friction, so only gravity is relevant.
Since F=GMm/r^2 and F=ma, we get that a=GM/r^2 is the same for any mass.
How does your *gravity* know to work equently on two different weights when the *gaseous compositions* are removed - and differently when the same objects are falling down from a heigth in the free nature?
It works the same in both situations. But, when there is a gas, there is an *extra* force of friction from that gas.
Get to the logical buttom of this question before demanding anything more from me, please.
It seems that you are looking for a mechanism. Why?