How's it hummin'?

I don’t remember if Bulkhead ever got an explanation for that Starscream clone he killed on the Nemesis,

or if the whole Team Prime got an actual explanation for the dead Starscream clone they found while the real Starscream was invading their base.

Did they find out that those were clones? Do they have to live with the possibility of there being more random and unexplained Starscreams somewhere out there? Spooky.