i've been pairing what you're thinking of up until today, when my NL210 shipped to a fellow tber.
(i've got my
CXL-112L up for sale too.)
together they do paint a more 'complete' picture. they both have a great low end, especially considering their size... but they have different sonic footprints.
the NL210 seemed to carry more of the outer extremes of the spectrum. the cxl112 filled in midrange info that to my ears was a bit 'missing', but truthfully probably only because i had the cxl first and added the NL later.
i used to swap off both cabs for smaller gigs, and take both for bigger gigs. i could never decide which i liked better -- the NL seemed to handle more volume, but when i turned up the cxl it really 'spoke' too.
(in any case, see link to my 'for sale' thread above & pm me if you're interested!)