After practicing for months with nice finishing presenting glides after each element was finished, in my test I just skated from one to the next. In the UK (at the rinks Iv'e skated at anyway), you only stop long enough to show you've stopped, you don't have to wait a length of time or for a signal from the judges). I think it might be so they can see you can get power up in jsut a few pushes.
I think they only get you to do the reskate if they think your mark in the reskate will bring you up to the total pass mark. I didn't hit the pass mark on my crossovers or my landing positions the first time round. They told me I needed more extension on my landing positions (and spirals), and asked me to reskate them, which I then passed. I still hadn't passed the crossovers, but my mark on the edges was high enough that it didn't amtter, I still passed over all.
Good judges should be happy to give feedback. There's no point saying someone is failing without telling them why.