no,this is not.......but if u really pay some attention to the trailer and all those..maybe u will find the relation.
(Like the scenario writer is just trying to add some reference to "Shinra" in FFX-2,but actually FF7 and FFX-2 doesnt have any relationship between them.)

Square enix, they are good in referring to something...
Cloud and aerith appearing in Ivalice of Final Fantasy Tactics?
Zidane(ff9) said he knew a spiky haired guy who holds the buster sword?
Shinra
Not to say Kingdom Hearts because it is purely intentional to make it this way.