Sure, I do reviews first thing every morning, and sometimes right after lunch (mostly just rereviews), but that would give a mean/median response time of 4 hours assuming work completion time is uniformly distributed. And if changes are requested, that would add another 2-4 hours, which brings the total review-in-wait time to a full day, which the post was saying was unacceptable. To get the numbers they claim they must be reviewing more frequently than that.
Every team member doesn't do their review at the same time. You're likely to get a review within a few hours, which means total review time (they're only counting the time it's waiting for a review) is unlikely to be a whole day.
