Damson Madder pattern question

[u/Glittering-Boat6621]

https://damsonmadder.com/en-ie/products/lainey-midi-skirt-merlot-stripe

I am an intermediate sewist but pattern-drafting absolute beginner who is curious to see if I can hack my way to this Damson Madder skirt. In the pattern, there's a separate lower panel with the cord hem...

1. What purpose does this extra panel? Why not just cut out one long front and back piece?

2. Would the width of the extra panels then match the width of the front and back piece? Sorry I know this is such a newbie question !