There is no momentum between or within games. Each possession is handled in a vacuum. That is, unless Seble significantly changed something and didn't tell us. And that feels extremely unlikely. Adding reasonable, believable momentum would be a significant programming challenge. You'd only do it if you perceived it to be a significant feature, and if you perceived it to be a significant feature you'd advertise it.
So I think it's safe to say that things are still as Tarek initially programmed them in this respect - no momentum, ever.