I personally think it should happen. They get along easily in Tri. I would also like to point out in the Epilogue of 02, that Kari's son has a bit of resemblance to TK, as shown in the picture. Also their crests are different and connected, therefore giving us a vague reason to believe in a connection between the two. Anyway, there are many holes and reasons to this ship. I think they're going to leave it up to interpretation, because they want to keep the fans, SOMEWHAT content with the series.