Google has always been notoriously slow unless you have competing offers, and even then is usually the offer you're waiting on.

I did my entire Stripe interview process in the time it took to go from HC-approved to offer letter at Google, and I was a rehire, and the SVP in question knew me by name (he was my former skip). Stripe launched the product I was applying for before I'd finished my Noogler ramp-up.