Top Radiator Hose Collapses

I don't have a recovery system just a catch can.
The over flow tube goes to the top and only is used for if the Radiator discharges fluid.
The Cap is Vented to allow this to happen, and Yes the Catch can is now vented also.
The Radiator is only filled to about 1 1/2 from the top allowing room for expansion.
It all works great.