is it possible? vincent & sephy?

[Marius]

my hubby D.R and i were recently debating.is there a possibilty that vincent could actually be sephiroth's father? i kno it's a bit over the top but think of the timing? lucrecia had a thing with vincent b4 hojo, when vincent was still a turk himself. plus in advent children vincent and sephy's looks are a tad bit similar. and if u check out their noses it's gets even more uncanny. well thats at least what i think anyway.so if u can help me out here maybe me and D.R can settle this debate with the help from some REAL GOOD FF FANS. so please share ur input on this . ;res