User blog comment:IamJakuhoRaikoben/Chapter 503: The Last Sight Seen, Review./@comment-7418318-20160928235211/@comment-7418318-20160929155700

True, I forgot about Macao... but I think that might have been a different form or Take-Over since the Vulcan invaded Macao's body, rather than absorbing it into itself, like all the Soul Take-Overs seem to do.

There's also the possibility that the Vulcan is still in Macao's body, but Macao is the one in control, just like The Beast first took Elfman over, until he managed to supress it later... only in reverse.

Also good point of the God Slayer vs. God... but still there is that thing that Dimaria said about Natsu surpassing the power of a God. That saying seems to indicate that she still has Chronos' power inside of her, but Natsu surpassed it.

I wonder if something happened in that fight which Mashima doesn't want us to see yet. If so, we might get a flashback showing that short fight once the need for secrecy is over.