When I push a wall with my hand, the wall does the same and because
both forces cancel out the sum of the forces applied by me on the wall and the wall on me is zero, plus the friction on the ground to keep me from sliding, neither me or the wall is displaced from its position.
Is there a preference over action or reaction? My doubt is: is the interaction between the bodies instantaneous, there is no time delay between action and reaction? And if there is no delay, does it matter if I'm assuming that I pressed the wall first or the wall did it first?