1965 AC Bypass Switch

Reading further in the 1966 Factory Service Manual.

By-Pass Switch Adjustment
With vacuum applied to the rod side of the inlet
door actuator, the blower motor resistor by-pass
switch must be adjusted so that the vacuum actuator
shaft will engage the switch lever, with .020 to .060
inch clearance between the inlet door tang and the
switch base, moving the switch lever to the closed (on)
position with vacuum applied to the top of the
actuator.​

Now I'm more confused. I'm pretty sure that "Inlet Door" is the door that allows air to go through the evaporator when open. This door is open whether the controls are set to Max AC or regular AC. But that does not agree with the earlier text which implies that the bypass switch is only closed when the controls are set to Max AC.

Still need help with the questions from my earlier post.