Ever since I got hooked on season one, I've been thinking the Chase/Weiner thing and I think a lot of people are overlooking the other way around. Retroactively, I can see a whole lot of Weiner in the structures of later day Sopranos, it's just that then we didn't know that.
Now, of course it all fits with what Chase was trying to do, but the way say Marriage of Figaro or The Jet Set were structure in a way that the episode began, then it split into something that felt like a tangent until you "got" that the tangent was actually the point and the "opening" was all about getting to it reminds me a lot of, say, the weird-as-hell structure in Kennedy and Heidi. Of course, that episode has a "major" plot point, but it's the fact that the reaction to it is what gets showcase in a way to makes more sense to the overall point of the series that makes me think Weiner actually influenced Chase a lot.