For the CXO, dont know the exact recline degree, but from my experience its pretty much standard as any other office chair.
Now, if you are looking for a super recliner...check this out:http://www.sitbetter.com/view/chair/ofm-680/power-rest-executive-recliner/
It looks like you are looking for a REALLY comfortable chair that leans back a a lot and will last? There's one, a bit pricey, but beyond comfortable (its unlike the leap or other similarly priced chairs that have a firm seat, and really are meant for working ergonomically) is the Nightingale...