File this one under "thats interesting", but I've been exploring more than a few weird itineraries and came upon an award that includes legs on both Singapore F class and ANA Suites in Feb 2021.
Granted the Singapore F flight is less than two hours, you have to fly 7+ hour stretches in the back of the plane before and after, and you've got to preposition yourself in Adelaide Australia, at least you get 7 hours in the Private Room and for 80k miles, this is a steal compared to any premium cabin departing or returning to the USA.