Haney is different, he is very technical and he will not make a costly mistake that will make Kambosos capitalize. I think Haney is still gonna dominate here, his quickness and his defensive style is hard to break against a much slower fighter, Kambosos needs to be lucky in order to win here.
Haney is indeed a defensive player but Haney isn't good as Mayweather Jr. in terms of shifting def and offensive mode, IMO. So there is still a good chance for Kambosos to crack the defense of Haney.
If Kambosos fail to adjust in this fight, obviously, Haney will surely dominates the fight. Though I do not think Kambosos needs to be lucky in order to win the fight, Kambosos needs a new strategy to outbox or outclass the defensive boxing style of Haney.
We can see that Haney is in fact the favorite to win this fight but if you were Kambosos how you would approach this fight in order to get the unlikely win? And it seems to me the only way to do something like this is by trying to bring the fight to Haney and make him uncomfortable so he cannot execute his better boxing technique, and even in that scenario I will give the advantage to Haney but I think there will be a slightly better chance for Kambosos to win the fight.
Job Straight and lots of it. Kambosos must outbox honey. He must land lots of jobs and straight while evading the counter punches thrown by Haney. Kambosos must also target the body, any legal part that can drain the stamina out of Haney. Kambosos can also try approaching Haney via different angles, and try to learn from Manny's attack and evasive moves. It is quite difficult to crack a defensive player especially if that player is good with countering and has KO punching power. But I believe there is no perfect strategy in boxing so any boxing style can be countered by another boxing style.