Just had one, I was playing some weird custom campaign, where every other mission was a non-playable cutscene, but with no messages or narration or anything, I was just watching capships fight, they mostly looked Vasudan, I remember a Typhon and a Hatshepsut both fighting against some kind of massive ship that was more than twice as long as both of them combined, it also looked sort of Vasudan. There were some smaller ships like Sobek corvettes, and at one point there was a Colossus too, and some ships larger than the Colossus, all exchanging beam fire, I don't remember seeing any strikecraft or Shivans though.
Then there was an actually playable mission, but the briefing was 80 screens long, and most of it had no descriptive text, just labels, so you kind of had to guess what to do, the mission involved jumping to multiple points in a system to patrol it and trying to stop and download information from some buoys or something. There was also a part where I was flying a ship but it was much more like Descent, with an indoor structure with a reactor and a countdown once you destroyed it, and an exit you had to reach in time. I remember the reactor was guarded by Red Hulks that I kept firing Mega Missiles at, and I kept saving and reloading the level while in the middle of the self-destruct countdown. There was another one of those cutscene missions where a giant ship (larger than destroyer class) was heading straight for me, I didn't recognize its design, but at some point a huge yellow beam was fired at it and blasted a large chunk out of the front of it.
There was more too, but I don't remember it clearly.