There's not a great deal of correlation to Preseason wins and losses and Regular season wins and losses.
But.....I suspect there's much more correlation between what happens in the first half in Preseason with what happens in the Regular season because you're playing more first stringers against first stringers than a bunch of guys who won't see the field much playing against one another.
That is why I'm interested in these Rams games and only watch the first half. Maybe a day or two later I'll watch the rest.