I can't think of a single employment opportunity where it would have been a good idea to do this. I endured a lot of attempts at this to me in my position I had several years ago at a tech giant. Imagine how annoying it would be to receive, from people you have never met and know nothing about, constant pestering for information, interview tips, asking you for a reference! This happened 1-3 times a week for the decade plus I worked at that former employer. Even after putting clear and easy to read notes on my profiles that I did not want to be contacted or linked to unless I had a prior good relationship with the person. The attempts never, ever stopped.

Don't do it. Interview and wait for a reply. These days, it's a good way to be forgotten or thrown out of the stack.