If you are comfortable having conversations, well heck there ain't no rule you have to cut off communication. Establishing a no contact rule is usually done because we need it for one reason or another. If you don't need it, you don't need it.
The lack of anger could either be a healthy reaction or not. If you aren't angry because you have successfully detached yourself, wonderful. If you aren't feeling anger because you are suppressing it, that may be a problem for you. But only you can know which applies.