First of all, every kind of anime is connected somehow. Not in plot-wise, i mean.

For example, I am sure that everyone of you has at least heard the name Sakura more than once in an anime or two. There is also the title "Honky Tonk" that was shown in Cowboy Bebop. GetBackers had it for a small restaurant just called Honky Tonk.

So, you should know by now that they will use names more than once in any kind of anime.