I dunno if I'm just unlucky or it's part of the game, but it feels like literally every hunt in HR is interrupted by Blazegeuse or Deviljho and the other large monsters roaming the map. On one hand, it's helpful that other monsters, Blaze and Jho especially, can do so many damage to your target. On the other hand, the AI in this game is straight up dumb because after they work out their problems, everything in the vicinity just ignore each other and all turn on you.
I was hunting an Uragaan and everything was going swell. Blazegeuse shows up, does a bit of damage, and I shoo him away with a dung pod. Then, within the next what felt like a minute at best, Uragaan then decides to roll away into a room with an Azure Rathian, I shoo that away, and Blazegeuse shows right back up. Mix and match, rinse and repeat this cycle for about 10 minutes and I'm losing my fucking mind because I just want to get this thing alone to wear it down and finish the hunt.
I even backed away for a while and the Uragaan and Rathian were just standing there, chilling for a while. I literally gave it like 5 minutes waiting for one to leave and they just sat there looking around. I wasn't registered as "in combat" either.
I'm not planning on quitting the game or anything. In spite of situations like this being a regular occurrence, I'm still having fun. I'm just not sure if I'm unlucky or the scripting/AI in the game is sometimes fucked and it's reeeeally annoying sometimes.