Batfink figured that out a few posts ago.
He also figured that it already has a name. Lufbery. And to be blunt only beginners or those who don't have a clue about stall fighting would consider lufbery as the only form of stall fighting.
If the only qualification you have for Stallfighting is that one or both planes have to at some point in a sequence of maneuvers get at or near stall speed then when I rope someone, stalling him out and loop over the top, throw flaps out and stall over myself with gravity assist to blow him away, I'm Stallfighting.
At that point and for that short moment yes.
That's just plain silly..
No, what's silly is you trying to categorize and over analyze just about everything.
E fighting and angles fighting, as defined, both have same elements, both use same BFMs, have same goals. The difference is in approach. One gives more weight to certain aspects than other and vice versa.
Take a look at the top and well rounded pilots, like Murdr, TC, Batfink, WW, Akak (to name just a few taking part in this thread).
For example TC and Murdr would gravitate towards E fighting, but when circumstances are right they'd switch to angles pursuit in a heart bit.
Bat is more of an angles fighter, yet he would take every E advantage and use it well if given opportunity. Same for WW and Akak.
You can sort anything into your boxes as you wish, but on the end, you're just limiting yourself.