What does G2 (chapter title) refer to in Death by Meeting?

It is possible that the acronym G2 (as the title of a chapter) may have several interpretations, depending on the context of the chapter. I see multiple meanings which could be puns.

In many countries, G2 is the designation of the Intel staff, used to disguise its purpose. The system comes from the pre-WW II [US MI staffing designation.]

It was later adopted by many other countries whose military forces had been trained by American “advisors” in the 1950s. (1)

As far as I know, the usage was still current up until 2014 in the USA.

So we have:

G2 = Military intelligence

From this, we have from modern slang an interpretation of the acronym to mean intelligence in a broader sense.

In depth information about any person or thing;

Urban Dictionary. (sorry)

...from that, we can derive:

G2 = Deep dark intel on a person. This is tricky, as it often means digital hacks.

And then, there is G-two , which implies G, plus a number.

Most economic summits conducted which include the most important world leaders have a similar designation.

The Group of Seven (G7) is an international intergovernmental economic organization consisting of seven major developed countries: Canada, France, Germany, Italy, Japan, the United Kingdom and the United States, which are the largest IMF-advanced economies in the world.

I think it was once G8, including Russia, but , well, politics.

G7 = a summit

So to me, this looks like an allusion to 2 different (maybe 3) ideas.

As it was a summit of two merging groups, and the merger was dependent on knowledge of the joining groups...I would say:

It is a play on the idea of G7 as a summit, and G2 referring to intel on an opposing force.

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