Then again, a Federation contractor supposedly designed and built the Yeager
and the Maquis ships both. Why would a Federation design element be out of place in a Federation ship? We accept "standard" saucers, nacelles and impulse assemblies in unlikely combinations, so why not accept a "standard" secondary hull as well?
(Especially when there's precedent, in the Ambassador
secondary hull essentially being upscaled Constitution
ones, or the Galaxy
one being an upscaled New Orleans