Are 2.3.1 flashes counted only within any one small area, or summed across the full content? #5189

Based on the 2.3.1 text and the definition of general flash and red flash threshold, would multiple flashing areas of the screen count toward an overall three per second limit? Or is it that flashing must occur in one 10 degree area at more than 3 per second to fail, rather than across the entire content area?

Example: I have two blinking white rectangles on opposite sides of a black background, assume that each is just over the 25% of 10 degrees area threshold. They each flash at a rate slightly over two times per second, but the patterns are offset, so one flashes on then the other flashes on. Does this fail 2.3.1?

When considered for each individual small area, the rate of flashing is under 3/second. When considered across the entire content area, there are more than three flashes per second.

Here's a live example of what I mean (the areas in the example are not correct, but assume each restangle exceeds the 25% of 10 degrees area)
WARNING CONTAINS FLASHING CONTENT: https://codepen.io/editor/electrickite/pen/019f1e0f-9e2a-7103-81d6-39ac7135f0ed

The procedure in G176 doesn't help all that much. It says:

1. The small safe area is calculated.
2. Check that only one area of the screen is flashing at any time.
3. Check that the flashing content would fit into a contiguous container whose area is less than the small safe area.

But does not have a branch to follow if more than one area of the screen is flashing at any time.