Has a small airplane ever been air launched from a heavy-lift helicopter? I would like to know if a small airplane, like a Cessna, has ever been air launched from a heavy-lift helicopter, perhaps as a stunt or as an aviation experiment?

I think it would have been a simple matter of lifting a small airplane with a special detachable hitch on the top of the airplane and then for the helicopter to have taken it up to a height of say 10,000 ft. I imagine the airplane would have then started its engine, detached from the lift cable, gone into an immediate dive, and then would have come out the dive after a thousand feet or so.

I have searched the Internet for a stunt/experiment like this one, but have not found any.
November 2017 the Dream Chaser shuttle craft was dropped from a Chinook helicopter
from over 12,000 feet.  The automated glide test back to a runway near Mojave, California
was a success.