LM5119EVAL: What is the purpose of the copper neckdowns on this eval board?

Hi,

I've been researching the LM5119, and I noticed that the eval board has some interesting copper neckdowns on all 4 layers.

For C27/C23, I'm assuming the neckdowns in this region force the frequency current to come from the capacitors? And maybe a similar story for C26/C22?

I also noticed larger neckdowns between C43/C44 (not populated). I'm wondering if these neckdowns also encourages the caps to source the transients, but larger neckdowns to handle the high current flowing through that region?

Would love to get some input on thinking behind this layout. Thanks!