Select specific joined object I have an object to which another object has been added.
However, only the first object appears in the outliner.

I'm able to select it using the B key and then trying to catch all vertices of this object, but if the 2 objects were even overlapping, this wouldn't be possible.

Is there a way to select the attached (or the original object) with a shortcut instead of having to select each vertex of it?
with L you can select a whole separate mesh