I think everybody who interviews at Google gets “stuck in the final process for a week”. That’s kinda how they do things. I interviewed there and they rejected me at the final stage after many days of no-communication; but they told me I almost made it, which made me feel good until I talked to other people and found out they say that to everyone. Still: best of luck to you :)
If you made it to the full slate of interviews, you're already in the 1% of top applicants. If you made it through to hiring committee submission as well, you were very close to getting hired (they don't even try otherwise) and they're serious if they suggest you try again later.
