Remember that Eye of the Tiger was originally supposed to be the second half of Golden Voyage before the storyline was split in two.
Says who, Terry? Golden Voyage, for whatever its drawbacks, has a clear begining, middle and end, and for that matter, so does Tiger. A follow-up, sure, but I've never heard or read there was any connection plot-wise. I've written a bit on this stuff... would love to know where you heard that.