So I finally understood why 2 objects with different masses, free falling from the same distance reach Earth's surface at the same time (due to the objects Inertia). Now when the objects fall in the atmosphere (from what I understood) the parameters of the air resistance are, the speed and cross-sectional area of the objects. So let's say we throw 2 objects that are spherical and have the exact same volume (thus eliminating the cross-sectional area parameter) but different mass, making speed the only parameter of the air resistance. The heavier object (object A) will fall to the surface faster than the lighter one (object B) because its terminal velocity is higher.
So having all those things in mind my question is this: When dropping objects A and B at the same time (inside the atmosphere), will they fall at the same exact same speed UNTIL such time when object B reaches its maximum velocity?