Is the following sentence gramatically corrent?
He has shown sufficient technical aptitude, as has he high motivation to complete the project earlier.
In this sentence what meant is that the person has shown both the technical aptitude and the high motivation.
I am not sure the as - aux. verb. - subject (e.g. as has he) construction is gramatically correct in such a context. And if it is, what are other conjunctions that could possibly replace it in this context without much changes to the rest of the sentence?