So it is your genuine reading of that rule that someone can leave for 1 second and then come back because that falls within your dictionary-words-only reading of the policy? Or is there a chance that, in general, policies require the smallest amount of interpretation to see how it would make sense in the real world? Or are you just being a contrarian for fun? If not one second, how long? How can you determine that with it not being written in the policy? With the complete lack of guidance about "how long you're allowed to be away", only "per day" makes sense. There is no other way to read it.