It is never too late.Possible studio produced duet of Luther Vandross and Diana Ross?

Luther Vandross recorded "Evergreen". I think a studio produced duet, with added vocals by Diana Ross would be enjoyable. The musical key that Luther Vandross is singing in would blend in joyfully with Diana Ross' vocals.
"Unforgettable" by Natalie Cole and Nat King Cole is a remarkable studio produced duet.

It would sure sound good, but I'm not sure how it would be accepted by audiences in general.

EVERGREEN as in Babs' Evergreen?

Diana wouldn't touch that with a ten foot pole.