I bet there are still the odd occasions when the 206 training helps to provide a 747 captain with that little extra margin.
My first commercial flying job (1962) was flying Cessna 180/185s for STOL. I retired as a B-747 Check Pilot with SQ.
The most important thing I learned from flying in New Guinea was always to "keep the back door open", always to have an alternate plan in mind for when things went wrong. Didn't matter the aircraft type. Worked well for me...