But without an A of A device
We are talking about VFR flight.
Every aircraft is fitted with an AoA device its called a window. instructors don't look across the cockpit to know your airspeed is off. We just look at the attitude.
There are also a huge number of collisions at that same point a trimmed aircraft will keep the same speed if the pilot doesn't annoy it. So if you attitude is set and your trimmed, the speed is going to be good. If the runway is going up in the screen you put some power on if its going down you take some off, if its staying in the same position you leave it alone.
So look out to me look out carries more priority. While doing the look out you have access to the aircrafts speed via the window and the attitude. Nose high your slow, nose low your fast.
Some of us made our students do circuits without any instruments at all and usually the student was spot on the speeds required and height all done by attitude and sound of the engine definitely more spot on and consistent than the ones that had got used to needle chasing.