I liked the specificity in your original post.

For myself, the example in the blog post brings up a lot of feelings from previous complex relationships with managers and their managers.

I have been in contexts where asking for a heads up on skip level feedback would have seemed reasonable. I have been in contexts where asking for a heads up on skip level feedback would have felt like retaliation. I’ve honestly been more fearful of saying anything at all in skip level 1:1 in recent years, from those previous experiences of feelings of retaliation.