There isn't much in the game that suggests either of the two are related, especially considering they are on separate timelines. Although, whether or not that has an effect on them is undetermined. The general consensus seems to be that they are not related.
Since I've yet to find any pieces of...
I agree with this. I think it is definitely an attempt at a throwback; I felt that it was very lazily executed as a plot development because it was absolutely irrelevant to the game and wasn't implied at all in prior dialogue.