The ascent timeline has largely been unchanged. However, boost back burn is only 44 seconds long compared to Flight 6, which was 54 seconds. This decrease in time could be due to either a high throttle setting for boost backburn or Booster 14’s raptors being a bit more upgraded.

I think this has more to do with the fact that the v2 ship is so much heavier than anything else. Since the booster is basically unchanged, it doesn’t end up going as far as with a lighter ship, and thus needs less energy to boost back. It’s one of those fascinating things about a fully reusable architecture where more delta-v is shifted to the upper stage!