If you are regarded very highly, if you suggest to your manager there's another person out there like you they will work the system to get that person lined up

If you are regarded very highly, if you suggest to your manager there's another person out there like you they will work the system to get that person lined up for an interview ASAP. If you aren't very highly regarded, your suggestions will be put into the HR system and never looked at. If your manager is inexperienced or not very good then there's nothing you can do about that.