11 month old home.
The bump out is for a gas fireplace, directly above this is a stone hearth. The 2x10 (3) carrying beam has about a 5’ overhang from the lally column to the end. The end stops under the rim joist location of the main footprint.
I would think it would need support just like the other end terminating in the foundation at the beam pocket, but it pretty much is just holding up the floor.