Unlike on Android, where pushing an app live is almost instantaneous, on iTunes it takes 24 hours for apps to propagate through all the various content distribution nodes.
It's much more likely it's this, since knowing Apple's review teams I would strongly suspect when they saw the "Google Chrome" app in the review queue they raised it up the management chain.
There is no rhyme or reason to this, it's just how it goes in the crazy world of iTunes Connect and the app store.
