Okie dokie, Sunrise. And I agree, this is a discussion forum for discussing, no problem with that!
One last point I wanted to add but didn't because I was unable to find the sutta for reference, is that I recall it being said that one of the impossibilities for a stream-enterer is to take an eighth birth, the implication being that they become arahants on their seventh birth. I believe this qualifies as an example of "birth" used in a non-momentary sense, since if you do follow momentary rebirth, it follows that you think "birth" is happening all the time, whenever we self-identify with anything, right? Which is certainly going to happen more than seven times, probably within even one day or hour! (unless I misunderstand the implications of the moment-to-moment rebirth of "I am" thingie)
I don't think it could be rightly said, looking at the suttas, that every stream-enterer became an arahant within mere moments of reaching stream-entry. So in my mind, the reference seems more likely to birth in the typical sense, and if you would agree, I would then point out how it states that the stream enterer only has seven more of these births, meaning that after that, no more births in the typical physical sense either.
But then again I can't find the darn sutta so I might not remember right. Maybe someone else remembers.