In judo, I got through 25 minutes of more or less continuous randori, with the catch that all of the rounds except one were newaza. Still, that's a lot for me. Definitely some endurance progress.
In that one standing round, though, I did validate that I can get behind people for nidan kosoto gari (but the arms part is my failing there) and that I get better results if I take the risk of turning more for seoinage. I also found out that, even if I get in position for sode tsurikomi goshi, people can just step out of it because I'm not really pulling on the sleeves.