Yes, but entirely predictable, and absolutely meaningless. This just allows Trump to trash them both more easily. The people who like Kasich are not the same as those who like Cruz. They are both already running in the primaries, and losing. So by saying they are collaborating what to they hope to accomplish? The fact is that they will lose votes this way.
This is the RNC's first line of defense...I'm sure they have strategies for every outcome...It's going to get really ugly...
Trump will beat both of them like a Good Pro football team playing against two high school B Teams in the upcoming elections and California