I have been looking at some of the questions on the site about Warp collisions with stationary or non-warp speed particles, but is there any example (canon or otherwise) that discusses a battle taking place at warp in Star Trek? I'm not aware of any but wonder if anyone has looked at this before. Has there ever been a warp / non-warp collision?
I know the worm-hole from deep space nine allowed for multiple craft during the Dominion wars but am wondering if warp bubbles are exclusive or could be entered. Most notable example in Sacrifice of Angels
The non-related science fiction series Outlaw Star has a similar warp space that does have several instances of combat and collision, so maybe I am just remembering that. It also was a major plot point of Thor Ragnarok.