And the ToS didn't "conflate Set with Typhon." The ancient Greeks did that.
Actually it works like how people doing impersonations of Christopher Walken do (did?) Kevin Spacey doing Christopher Walken.
What happen was: Set started off as a bitch younger brother of Osiris and god of "Desert and Storms". Not the raging leviathan of envy it latter became. He was nothing too important at first.
Consider the Norse, which actually a better example. Originally Norse mythology had no conception of afterlife beyond; "Noble warriors go to Valhalla, they rest of us just die and that is it".
Christian influence then rubbed off and christianized their beliefs. After that EVERYONE got an afterlife. In this way, the role of Set significantly changed as the role of OSIRIS changed.
The commonalities between Set and Typhon arose later. Towards the END of Ancient Egypt Osiris was the most worshipped god, with Set evolving into a more Typhon like (adversarial) role..
The role of trying to overthrow god. Typhon went after Zeus, Set was the jealous younger brother that killed Osiris. Even then Set's importance was second or third fiddle to Osiris. There was also significant JC influence on both Greek and Egyptian myth.
So let me rephrase what I said as, "cannot understand morphology within interacting belief systems".
* You find humor with Anton as Osiris circa 1975.
** For disclosure, I have a problem with folk like Aquino who mislead or seriously don't understand what "projection of internal dialog" is and pedal that as a connection with an AIWASS-like muse to gain Theistic Prophet Occultnik noteriety with.