Yep pretty much this. I was a contract interviewer with Karat for a few years and taught people how to conduct interviews. There's a graded scale of assistance, anything more than gentle prompting to re-read your code or the error output starts counting against you. If I have to point out a block of code or even a line, then that's getting to the point that most clients will pass you over when they review your interview, so the rules are we don't give that stuff proactively.