No, the two games do not have interrelated story lines. They are set in 2 different unnamed worlds. Unlike in Ivalice Alliance which explained the connection between Final Fantasy Tactics and Final...
The 'Final Fantasy 2' released in the US for the SNES, was actually Final Fantasy 4. The original FF2 and FF3 were not released outside of Japan, which is why they chose to name it like that.However...
No, it's partially the other way around. The Japanese Final Fantasy 4 became Final Fantasy 2 in the US, as the original 2 and 3 were skipped. So the original NES release of 'Final Fantasy 2' in the...