alternate possession

[bossref]

The lead calls a foul on blue 33 for his illegal
contact with the shooter, red 10. (ball does not go in)
The shooter retaliates by pushing blue 33.
At the same time, red 55 and blue 55 are tangled up
while positioning for the potential rebound, and
the partner calls a double foul.
About 5 seconds later, red 55 and blue 55 scream profanity
at each other and are called for double technicals.

The possession arrow now points as red's next AP.

What is correct penalty procedure (NCAA rules)
and if no freethrows for the two double foul situations,
who gets the arrow?

Would it be different in NFHS ?