The gap never disappears between recruited students and walk-ons throughout college.

We have that gap disappear when measuring women in the matrilinial society.

Saying a gap in one disappears in the other is an arbitrary statement.

It's not that the gap is fundamental and then disappears.

Similar missions over the next year finally demonstrated this beyond a doubt, and at least in official circles the gap disappeared.

The gap narrows, but does not disappear, when students from similar backgrounds are compared.

The gap into his own universe had disappeared, leaving in its place a brilliant blue star.

If they tilt in the other direction, does that gap disappear?

By the 1970's, the pay gap between young black and young white workers had all but disappeared.

Also, has the author of the article not noticed that the gap between the developed world and the developing world is disappearing?