I was doing an exercise in which you are supposed to change questions into honorific expressions (Genki II second ed, pg. 175 Ex. C.9.) when I stumbled upon a question which had an answer that seems contrary to the way grammar was explained previously:

* More precisely, けっこんしていますか was changed to けっこんしていらっしゃいますか.

However, according to the grammar section of the book (as well as A Dictionary Of Basic Japanese Grammar): 

> 
> "honorific verbs generally take priority over ていらっしゃいます". 
> 
> 
> 

I was wondering **why in this situation the honorific verb なさる doesn't take priority** (giving けっこんなさっていますか as an answer). What's more, if you were to type both answers into google.co.jp, the ていらっしゃいます version has 200 000 hits to 5000 of けっこんなさっていますか.