There is an old barn up the road from me that has been falling down
Over the last 20 years. For about a year there was half a roof section cantilevered I would quess about 15 ft supported by the plate and roof strapping. I thought it was amazing that it lasted as long as it did including snow load last winter. A couple of months ago a major wind storm in the area removed the overhanging roof.
This thread made me just think of that barn.