Hi Ralphy
So it's the same as the FAA excerpt from the book... but then the "Air law" Jepessen Book is wrong!:
The two are not mutually exclusive. In reality pilots are conforming to both statements day in and day out. It goes like this:
a) You wish to line-up. You check the approach and if there is an aircraft on final, you will wait.
b) You have turned final. There is an aircraft at the threshold. You continue approach but if they haven't taken off before you need to land you go around.