Step One: introductions through the play pen. Roomba was the most curious and the boys inside couldn't have been less interested in the other kittens.
The kittens are doing very well with each other. The decoders are more coordinated as they are older and they play a little rougher. But mom noticed Monday night when she was in there that the vacuum kittens are definitely a little bolder and more curious about her. Whether that is their momma being gone or the example made by the decoders, we aren't sure.