Dic# Someone has done one thing while someone (else) is doing another

This kind of juxtaposing two actions seems to be a pattern in expressing some temporal relationship between the two:

• Someone has done one thing when/while she (or someone else) is doing another.
• Someone has been doing one thing when/while she (or someone else) is doing another.

I take two examples below:

1.

The crash of 2008 was a perfect storm, or rather a black swan: unique and literally unforeseeable. Since then the exploded products have been stripped of their risky elements, a mountain of extra rules and security measures have been implemented, while banks are working around the clock on cultural changes. So ... isn't it the time for 'banker-bashing' over?

... ... Swimming with Sharks

2.

After more than twenty years of falling prices (deflation) and economic malaise, Japan's leader has vowed to end deflation as one tool toward restoring the economy to health. ... Back in the United States, when members of Congress are not criticizing China for selling us things too cheaply, they have been crafting new regulations for banks and other financial institutions in response to the 2008 financial crisis. The public is still angry about bailouts, the catch-all term that has come to characterize the response to the crisis.

... ... Naked Money