My friend sent me a video posted yesterday by The Sword Saint.

Rathalos Extreme Solo by The Sword Saint

It's pretty cool! They use Final Sting to kill Rathalos in a single down, and I also learned an assumption I had was wrong. Nightbloom and Phantom Flurry don't share a recast \o/

Also neat to see that each hit of Matra Magic counts as a full GCD hit for the purposes of the down meter, raising it by 12 with each cast. That means they could have killed it even faster!