Yeah, I was brought back after the final interview to do another round and was verbally told by the recruiter that everything looked great and that she would be extremely surprised if I didn't get an offer.
Being brought back to do another interview is not a good sign at Google. Best case is your interviewers totally forgot to cover something important, but more commonly it means somebody has serious doubts about something and they need to check it again.
Or that you're being considered for a similar job but under a different hiring manager.
Another thing to note about Google hiring is that it's very different for different role types. Specifically, for SWEs, Sales, and other roles that are expected to function in a largely boilerplate manner, it's fairly cut & dried how things work, but for roles that are less clearly defined (for example, "program manager" or "solutions consultant") the actual responsibilities can be so highly variable (or so niche) that interviewing for them is a specialization in itself. These kind of one-off situations is where Google's "automate all the things" general mentality falls apart.
Guess who got to tell me I didn't get it (again)?
Note to recruiters: don't say that stuff.
Fortunately, I'm still happy in my current job.