I have browsed many similar questions and ECMA262 2022 for some days, but still don't know why.

1. I know LE is the same as VE originally, does it means that they point to one Environment Record.
2. in the top level of the script, if contains let or const declarations, will a new Environment Record be created and LE point to it?

Am I right to think it as following?

let a = 1
var b = 2
console.log(a)
---------------------------
// Pseudo code：
// which right? or other else

global Execution Context = {
  VE: {
    bindings: b
    [[outerEnv]]: null
  },
// create a new ER whose [[outerEnv]] is null. then LE point to it.
  LE: {
    bindings: a
    [[outerEnv]]: null
  }
}

or

global Execution Context = {
  VE: {
    bindings: b
    [[outerEnv]]: null
  },
// create a new ER whose [[outerEnv]] is the original ER (which the unchangeable VE point to)
// then LE point to it
  LE: {
    bindings: a
    [[outerEnv]]: VE
  }
}