Regular Expressions - Positive and Negative Lookahead

My code now is

let sampleWord = "astronaut";
let pwRegex = /(?=\w{6})(?=\d{2})/; // Change this line
let result = pwRegex.test(sampleWord);

var test = "8pass99";

console.log(pwRegex.test(test));

I saw some explanation here which was

Here the lookahead is expecting two or more consecutive digits. We have to also check for Zero or more character apart from number.

I don’t understand this explanation. I get it that the issue is on the second part

(?=\d{2})

Why do I “have to also check for Zero or more character apart from number”? I mean, it’s even checking for ZERO or more, meaning it’s optional. I still can’t see it.

Challenge: Regular Expressions - Positive and Negative Lookahead

Link to the challenge: