That doesn't make sense (and certainly doesn't happen on my jalopy). If you have a hundred knot headwind into the HP, the outbound cannot be Rate 1 as there would be no chance of turning inbound anywhere near the HP inbound track.
The outbound turn into a headwind can be way less than rate 1 (sometimes only 5°) because it needs to go wider to allow for the tailwind on the inbound turn
As is sometimes the case, you are absolutely correct. I meant to say, MAX of rate one, often lower.
The point being NOT a ground track as suggested above.
(PS I know YOU get this A)