I don't think there's much more to glean about the race until the conventions. Because this is a rematch and because both candidates are unpopular, people seem more tuned out than at any time since the turn of the millennium. We see this in cratering political media ratings.
I think there are two possibilities - one is "Biden coherent, Trump not", the other is "two old men yelling".
SOTU and some sit downs are reasons to believe it'll be door #1; the TIME interview is a reason to believe door #2.