Post interview, your first "winning cue" is if they call your contacts. It's no guarantee in any direction but it's a good sign. In my case, they called about half the dudes who put in letters for me. I have heard of guys getting hired without having their references called but I think that's really rare. Then after the DB, you should get called by a CP anywhere from the day after to a week after. Letters usually are about a week to 10 days after the DB.