There seems to be two different layers (variations, flavors, sizes) of Big Mind.
One is the “drop” Big Mind. The other, the “ocean” Big Mind.
The first is when I awaken as space & as whatever local experiences arises within this space. It embraces the Absolute and the Relative, although on a local level. This is the drop.
The other is when I awaken as the view of Existence, as space & all phenomena (throughout the Relative world) arising within it. This is the ocean.
There is not really a qualitative difference between the two. The drop and the ocean both have the same qualities. But there certainly is a difference in quantity, in how full-blown the awakening as Big Mind is.
Both can certainly lead to liberation. And I guess both could be described as an enlightenment, although the former is a faint version of the latter.