When to acknowledge ATC

A Guy Called Tyketto wrote:



Nope, you had permission after the first exchange (where called you back
with your identifier)..


Has 2-way communication been established?

Yes.


If ATC does not
respond, you MAY NOT ENTER THEIR AIRSPACE.

Right.



Same happens with IFR traffic. If a Minneapolis Center tries to
hand off a flight to Denver Center, and Denver Center doesn't accept
the handoff, does the flight have permission to enter Denver's
Airspace? Absolutely not.

Wrong, it most certainly does. If a handoff is not completed for any
reason that is an ATC error. You have no way of knowing where the
airspace boundaries are.


The same applies here. If ATC does not
respond, you don't enter their space.

Right.




********. You must. But go on and believe what you believe.
I've posted references to documentation stating opposite your case, for
both ATC and pilots.

You've done no such thing. It doesn't exist.