I know Shaggy. I should clarify to say that Stall speed (by the book) is only for 1 G, max gross weight, wing config etc. etc.
I really don't understand why this is so hard to grasp. Stall = critical AOA. lift = speed^2 x AOA. That's all there is to it.
You get too slow in level flight. Your speed drops. Your lift drops. You keep pulling back to maintain constant lift as you slow. You exceed critical AOA, you stall.
You steep turn while flying slow(ish). The G increases. You try to maintain altitude by pulling, increasing AOA so your lift = weight * G. You exceed critical AOA, you stall.
It's really not that difficult. Why do these discussions keep coming up again, and again, and again?